C ENTURY SERIES
SP TC GT
O
WNER’S MANUAL
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TABLE OF
C
O NTENTS
Feature Overview
A brief description of design, features and functions.
2
3
W iring Conventions
Contains diagrams indicating how connectors for Crest consoles are wired.
Power Supply
A brief description of the rack-mountable Century Series consoles power supplies.
4
5
6
Power Connections
A brief description of Crest console power connections.
System Connections
Contains diagrams illustrating conventional system connections.
SP Input Module
Profiles the SP input module.
8
TC Input Module
Profiles the TC input module.
1 0
GT Input Module
Profiles the GT input module.
1 2
GT Stereo Input Module
Profiles the GT stereo input module.
1 4
SP/ TC Group Module
Profiles the SP/TC group module.
1 7
GT Group Module
Profiles the GT group module.
1 8
Matrix Module
Profiles the matrix module.
2 1
2 3
SP/ TC Master Section
Profiles the SP/TC master section.
GT Master Section
Profiles the SP/TC master section.
2 5
Technical Information
Includes dimensions, specifications, console access details,
user options, console block diagram, and rear panel layout.
Appendix A
Glossary
The specific details of console operation are described here.
Appendix B
Appendix C
Schematics
Lists available schematics for SP/TC/GT Console Modules & Power Supply
PAGE 1
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SP / TC / GT
C
ENTURY SERIES
Fea t ur e Over view
The SP / TC / GT features listed below
are common to all Century Series Consoles.
• SSM/PMI High quality preamplifiers on balanced micro-
phone/line inputs and on all balanced outputs for uncompro-
mised audio quality and reliability. All IC’s within the audio
path are socket mounted for easy upgrade or service.
• Full facility return sections includes Gain Control to handle a
wide range of input levels, High and Low frequency EQ, Aux
Sends, full Bus assignment section and level, pan, PFL and
Mute controls.
• 48 Volt switchable phantom power on all microphone inputs.
• Mute system on input channels is designed to mute both pre-
and post-fader signals including those Aux sends used as mon-
itors. When muted, PFL circuitry, Peak and Dynamic Signal
Present LED indicators remain fully operational. This is a fea-
ture not available on many consoles at any cost.
• Optional transformers available on all microphone inputs and
on Group, Left/Right, Mono, and Matrix outputs.
• Full Bus assignment section on input and group sections
allow for independent assignment to the Mono Clean Bus in
addition to the Stereo and sub group sections of the console.
The Mono Clean Bus allows for any input or return signal to
be assigned to the Mono output without first having to pass
through a group.
• External power supply with optional shared load parallel
power supply for uncompromised reliability.
• The EQ section includes an EQ IN switch with LED and a
80Hz High Pass filter switch.
• Dynamic Signal Present and multiple-sample-point peak indi-
cator LED’s are used on all input sections of the console as
well as on all primary outputs.
• Optional Matrix modules available.
• Optional Stereo Input modules available.
• Mono/Stereo PFL and AFL system. When a stereo module is
used, the signal is monitored in stereo while mono modules are
monitored in mono. Selected outputs may be monitored in
mono or as stereo pairs.
• Comprehensive Talkback section allows access to all primary
console outputs. Additional access provided to an external
location such as an on-stage monitor mixer system. External
signals can also be assigned into the talkback system including
Oscillator and Pink Noise source inputs.
• 8 Auxiliary Mix buses for use as effect and monitor sends.
Aux Send circuitry has front panel Pre/Post fader switching.
Pre fader signals have internal jumpers to select between a Pre
EQ or post EQ signal (Standard) source.
• Left/Right summing switches to Aux 1-2 and Aux 3-4 allow
for simple setups of overdub mixes by allowing Left/Right sig-
nals to be blended with Auxiliary mixes when used in record-
ing applications. In contracting applications, this feature allows
these Aux outputs to act as additional distribution amplifiers
for the Left/Right signals.
• Standard frame sizes include 24, 32, 40, 44 and 52 position,
with a 64 position frame available on special order. Consoles
may be ordered as 4 subgroup (8 Module Positions used
including Master Section) or 8 subgroup (12 Module Positions
used including Master Section) versions.
• Any frame size may be ordered short loaded for later expan-
sion.
• Direct access to Group Mix Bus allows expander mixers to
be easily patched into the console.
PAGE 2
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SP / TC / GT
C
ENTURY SERIES
W ir ing Convent ions
Since the same connectors are used throughout the professional audio industry, it is important to know how the connectors for
Crest’s Century SP, TC, and GT consoles are wired. The wiring is as follows.
INP UT XLR
OUTPUT XLR
PIN 1
PIN 2
PIN 3
PIN 2
PIN 3
PIN 1
PIN 1 = GROUND
PIN 2 = POSITIVE
PIN 3 = NEGATIVE
TIP - POSITIVE
TIP - SEND
RING - NEGATIVE
SLEEVE - GROUND
RING - RETURN
SLEEVE - GROUND
Input Plug Polarities
Insert Plug Polarities
TIP - POSITIVE
TIP - POSITIVE
RING - GROUND
SLEEVE - GROUND
SLEEVE - GROUND
Output Plug Polarity - Tip/Sleeve
Output Plug Polarity - TRS
PAGE 3
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SP / TC / GT
C
ENTURY SERIES
Cent ur y S er ies Cons ole P ower S upply
Century Series Consoles use a separate rack-mountable power supply which provides the specific voltages used by each console.
Crest Audio’ Century Series makes use of two different power supplies. The model and frame size of your particular console
determines which of the two supplies should be used. SP, TC, and GT consoles use power supplies as follows: Consoles with
frame sizes of 24 or 32 modules use supply model XCVA04; consoles with frame sizes of 40, 44, 52, or 64 modules use supply
model XCVA06.
Press to Reset
+20V +48V
ON
C
O
N
S
O
L
E
S
4A
-20V +24V
Power Supply
CAUTION
POWER OUT
POWER OUT
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CONSOLE
GROUND
CHASSIS
GROUND
2
1
AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
4
7
3
6
MAXIMUM AC IN:
XCVA04: 415 WATTS
XCVA06: 825 WATTS
5
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU
L'HUMIDITÉ
Á
Model XCVA04
± 20V @ 4
+ 24V @ 4
+ 48V @ 1
Pin
Pin
Pin
Pin
Pin 5 Digital
Pin +48V
Pin -20V
1
+24V
+20V
Designed
&
manufactured in the USA by:
2
3
4
Analog
Analog
S/N
6
7
A division of Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
Supply Identification
Twin Supply Operation
The type of power supply can be identified by the model num- When twin supplies are in use for automatic back-up, then the
ber shown on the back of the chassis and panel label..
ground links on both supplies should be fitted.
In a situation where the safety ground to the console chassis
has been connected and the ground path via the power supply
is causing a hum-loop, then disconnect the ground links on
BOTH power supplies.
Power Requirements
The Century Series power supplies have certain electrical
requirements to operate properly. If possible the power supply
should be connected to a dedicated circuit. Should any other
appliance on the same circuit draw enough current to overload
Console and Power Supply Grounding
the circuit, the breaker or fuse will trip causing loss of power Console chassis ground is electrically connected to audio
to the console. Note the maximum current draw specifications ground, pin 1 of XLR connectors and 1/4" sockets and to the
at right. Be sure that the circuit to which you connect the sup- terminal 'CONSOLE GROUND' at the rear of the power sup-
ply can handle the draw.
ply. The AC third wire connection in the power supply cable
The power switch on the supply front panel is also a circuit connects the metal chassis of the power supply to safety
breaker, there is no power fuse. Should the supply ever shut ground. This connection should never be disturbed. Hazardous
down, or trip at start up, simply push the switch to the off posi- voltages exist inside the power supply which require the case
tion and then on again.
to be grounded. When rack-mounted, the power supply ground
may transfer to the rack case thru the front fixing screws,
though this connection is not reliable. When a console is con-
figured within a complete sound system the grounding require-
ments may call for the ground link to be disconnected. This is
permissible only when an alternative ground path has been
provided. If in doubt seek the advice of an experienced electri-
cal engineer.
Ground Linking
S a fe t y Co n s id e r a t io n s -
Each new power supply is shipped with the AC third wire
ground connected to the console chassis ground. The connec-
tion is made at the rear of the power supply unit. This is neces-
sary for safety reasons so that exposed metal parts are ground-
ed. In the event of a live conductor making contact with the
console chassis or the power supply chassis then the current
will flow to ground without a safety hazard arising. Note that
when the console is disconnected from the power supply the
chassis ground connection to AC third wire ground is broken
and safety protection is lost. For uninterruptible grounding, in
a fixed installation for example, make a connection directly to
the console chassis from the safety ground. Disconnect the
ground link on the rear of the power supply. This disconnects
console ground from power supply AC third wire ground
which would otherwise create a hum-loop.
Power Supply
Model
Max Current
Draw @ 120V
Max Current
Draw @ 240V
XCVA04
XCVA06
7 Amps
9 Amps
4 Amps
5 Amps
Serial Number Tag
S/N
+48V @ 1A
+24V @ 6A
±20V @ 6A
Model Number
XCVA06
Model
PAGE 4
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SP / TC / GT
C
ENTURY SERIES
P ower Connect ions
The connections to and from the power supply vary depending NOTE: Although both of the multi-pin connectors on the back
on your specific configuration. Before setting up the console, of the power supply are labeled “POWER OUT”, it is neces-
always check to make sure the AC voltage marked on the sary (and acceptable) to link two power supplies together as
power supply agrees with the local supply. Always connect the shown in the diagram below.
console to the power supply before switching on the power
supply. Do not run the power supply if it is not connected to ADDITIONAL NOTE: The multi-conductor cable used for
the console.
power supply-to-power supply connection is different than that
used for a conventional power supply-to-console connection,
Multiple power supplies can be daisy-chained to provide fail- and must be specified when the second power supply is
safe protection in the event of a supply failure. When two or ordered.
more supplies are used, both power supplies run all the time. In
the event of supply failure, the remaining power supply(s) will Ground Link
take over the entire load.
To Console
CAUTION
POWER OUT
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CONSOLE
GROUND
CHASSIS
GROUND
2
5
1
4
AVIS
:
RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
3
MAXIMUM AC IN:
XCVA04: 415 WATTS
XCVA06: 825 WATTS
6
7
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU
L'HUMIDITÉ
Á
Model XCVA04
S/N
+ 48V @ 1
Pin
Pin
Pin
Pin
1
2
3
4
+24V
+20V
Analog
Analog
Designed
&
manufactured in the USA by:
POWER OUT
+ 24V @ 6
Pin 5 Digital
Pin +48V
Pin -20V
± 20V @ 6
6
A division of Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
Model XCVA06
7
To AC Mains
To AC Mains
Interface Cable
CAUTION
POWER OUT
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CONSOLE
GROUND
CHASSIS
GROUND
2
1
AVIS RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
:
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
4
3
5
MAXIMUM AC IN:
XCVA04: 415 WATTS
XCVA06: 825 WATTS
6
7
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU
L'HUMIDITÉ
Á
S/N
+ 48V @ 1
+ 24V @ 6
± 20V @ 6
Pin
Pin
Pin
Pin
1
2
3
4
+24V
+20V
Analog
Analog
Designed
&
manufactured in the USA by:
POWER OUT
Pin 5 Digital
Pin +48V
Pin -20V
6
A division of Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
Model XCVA06
7
PAGE 5
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SP / TC / GT
C
ENTURY SERIES
S ys t em Connect ions
The console is the hub of a sound system and because it controls most of the variables within a system, proper connection and
component relationships are vital to assure accurate operation and results. The following diagrams illustrate conventional system
connections.
Balanced Line Inputs
Keyboards,
Samplers,
Input Processing,
Drum Machines
via Input Module
Insert Send and Return
Connections
External Mixer
Input via Group Bus In
C
ENTURY
Balanced Mic Inputs
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
C ENTURY
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
1
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
0
0
0
3
4
6
3
4
6
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
Input Connections
PAGE 6
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SP / TC / GT
C
ENTURY SERIES
From Aux 5-8 out
Aux 1-4 out to
monitor amplifiers
In
MATRIX
INSERT
A
A
OUT
MONO OUT
RIGHT OUT
LEFT OUT
GROUP OUT
GROUP OUT
GROUP OUT
GROUP OUT
GROUP OUT
MONO INSERT
RIGHT INSERT
LEFT INSERT
GROUP INSERT
GROUP INSERT
GROUP INSERT
GROUP INSERT
GROUP INSERT
MATRIX
INSERT
B
B
OUT
MONITOR
MONITOR
L
R
OUT
OUT
AUX
AUX
3
4
OUT
OUT
AUX
AUX
1
2
OUT
OUT
EFX RETURN
EFX RETURN
EFX RETURN
EFX RETURN
EFX RETURN
-1
0
-1
0
-1
0
-1
0
-1
0
EXT TB OUT
EXT TB IN
STR PGM IN
OSC/ PINK IN
AUX
AUX
7
8
OUT
OUT
AUX
AUX
5
6
OUT
OUT
+4
+4
+4
+4
+4
Signal Processors
BUS IN
BUS IN
BUS IN
BUS IN
BUS IN
Groups
Mas ter
To effects returns
Out
Aux Connections
Local Monitor L
Local Monitor R
7001 Professional Power Amplifier
Clip/Limit
Signal
Temp/DC
Active
-6
-6
-10
-3
-10
-3
-15
-30
-80
-15
-30
-80
-1
0dB
-1
Ch B 0dB
Ch
A
Center
Out
From Local
Monitor Out
Right Out
Left Out
8001 Professional Power Amplifier
8001 Professional Power Amplifier
Clip/Limit
Signal
C ENTURY
Clip/Limit
Signal
Temp/DC
Active
Temp/DC
Active
-6
-6
-6
-6
-3
-10
-3
-10
-3
-10
-15
-3
-10
-15
-30
-80
-15
-30
-80
-15
-30
1
Ch A 0dB
1
Ch B 0dB
-1
Ch A 0dB
-1
Ch B 0dB
-30
-80
-80
Input Channel
Direct Outs
feed to remote
mixer/recorder
Matrix Outputs
to remote
location, mixer,
or recorder
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
5
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
1
2
5
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
3
4
6
0
0
0
Headphone Outputs:
1 under armrest,
1 in Master Module
Output Connections
PAGE 7
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SP / TC / GT
C
ENTURY SERIES
5
1 • 3
S P Input M odule
The SP input module is the most straightforward of the
Century Series. While it shares many features with more
complex input modules, the SP input module is simple in
design and operation.
LINE Switch
Selects between the Balanced XLR Microphone Input con-
nector and the Balanced Line Input 1/4" TRS connector.
LINE
+4 8 V
PAD
6
7
8
3
4 8 V Phantom Power Switch
Turns on 48V Phantom Power, required by certain micro-
phones for proper operation.
2
8
9
1
0
10
5
4
6
GAIN
30
20
3
7
2
8
10
1
9
PAD Switch
Introduces a -15 dB attenuation to the mic input signal.
0
10
6
60
5
4
6
3
7
8 0
2
8
GAIN Control
Adjusts input gain for proper signal level.
1
9
0
10
5
4
6
3
7
8 0 Hz High Pass Switch
Reduces all low frequency content at a 12db per octave rate
referenced to 80Hz (-3db point).
2
8
1
9
-
0
+
0
10
HF
8
8
PRE
AUX SENDS
Four Band Fixed Equalizer
16
16
-
-
-
0
0
0
+
+
+
HM
8
Controls the cut or gain of four fixed frequencies (10 kHz,
2.7kHz, 300Hz, 80Hz) within the input signal only when the
EQ IN switch is depressed.
8
PAN
16
8
16
LM
8
EQ IN Switch
Inserts the EQ section into the input channel signal. An asso-
ciated LED illuminates when the switch is down.
MUTE
16
16
MONO
L- R
1 - 2
LF
8
8
AUX Level 1 • 3 / 2 • 4
Adjusts audio level of a mix for use as a monitor or an effect
send. The signal source for this mix may be selected pre or
post fader by an associated switch.
16
16
3 - 4
5 - 6
7 - 8
AUX ASSIGNMENT 3 • 4 Switch
Selects the first two Aux level controls between the Aux 1•3
mix bus and the Aux 2•4 mix bus.
EQ IN
PFL
1
5
1 • 3
4
3
6
7
8
9
PEAK
SIG
2
1
0
POST/ PRE Switch
Selects the Aux 1•3 and Aux 2•4 signal sources between post
and pre fader positions.
10
5
2 • 4
4
3
6
7
8
9
2
1
0
10
AUX 5 - 8 Individual Level Controls
Adjusts audio level of a mix for use as a monitor or an effect
send. The signal source for these mixes may be selected pre
or post fader by an associated switch.
3 • 4
0
POST
5
5
6
7
4
3
6
7
5
2
8
9
PRE/ POST Switch
Selects the Aux 5 through 8 signal sources between pre and
post fader positions.
1
0
10
10
5
4
3
6
7
2
8
1
0
9
20
PAN CONTROL
Positions the channel image between the left (odd) and right
(even) channel assignment.
10
5
4
3
6
7
2
8
30
40
9
MUTE Switch with LED
Mutes the channel and all send functions. This switch does
not affect the PFL switch or the Peak and Signal Present LED
indicators, The LED illuminates when the channel is muted
from the local mute switch.
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SP / TC / GT
Rea r Connect ions
C
ENTURY SERIES
MONO Bus Assign Switch
Assigns the post-fader input signal directly to the Mono Clean
bus.
Direct Out
This jack provides the direct output signal
(post fader & post mute) from the associat-
ed input channel.
Bus Assign Switches (L/ R, 1 -8 )
Assigns the post Pan Signals to the mix bus in odd/even pairs.
Pan controls assignment between these two mix buses with
extreme left pan assigning signal exclusively to the odd mix
bus and extreme right pan assigning signal exclusively to the
even mix bus. When the pan is in its center position, signal is
fed equally to the odd (left) and even (right) mix bus. When
used in stereo applications, the channel signal may be located
anywhere within the stereo image as controlled by the Pan con-
trol.
DIR OUT
Insert
This jack allows for the insertion of an
effect or signal processor into the audio path
of the associated input channel.
INSERT
Bal Line In
This jack accepts balanced and unbalanced
line level inputs and delivers it into the
associated input channel.
BAL LINE IN
PFL Switch
Bal Mic In
Samples the channel’s signal pre-fader and allows for monitor-
ing within the master section of the console. This signal is not
affected by the Mute Switch. When depressed, the signal level
can be seen on the Left/Right meters, and heard via the mixer’s
headphone or local monitor output. When this PFL Switch is
depressed, the channel PEAK LED indicator illuminates at a
lower intensity. When used as a status indicator of switch posi-
tion, the Peak LED indicating circuit remains fully operational
by illuminating at a much higher intensity than its use as a PFL
status indicator.
BALMIC IN
This connector accepts balanced micro-
phone inputs for the associated input chan-
nel.
PEAK LED Indicator
Illuminates RED when any of the points monitored come with-
in 3db of the clipping point. Signal is sampled after the input
preamplifier stage, after the EQ section, and after the fader.
This LED also serves as a PFL ON indicator, but at a much
lower intensity than when it is used to indicate clipping.
SIGNAL PRESENT LED
Constantly displays level activity of the input channel by vary-
ing in intensity.
1 0 0 mm Fader
Used for control of all outputs of the channel except those Aux
output sections selected by switch to a pre fader position. (The
Insert Output level is not affected by the fader position.)
PAGE 9
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SP / TC / GT
C
ENTURY SERIES
5
1 • 3
TC Input M odule
The TC input module is the intermediate input module in the
Century Series. It is essentially the same as the SP except for
the sweepable mids on the EQ section and a polarity reverse
switch.
LINE Switch
Selects between the Balanced XLR Microphone Input con-
nector and the Balanced Line Input 1/4" TRS connector.
6
7
8
LINE
+48V
PAD
3
2
8
9
4 8 V Phantom Power Switch
Turns on 48V Phantom Power, required by certain micro-
phones for proper operation.
1
0
10
5
4
6
3
7
GAIN
3 0
2 0
2
8
1
9
PAD Switch
Introduces a -15 dB attenuation to the mic input signal.
10
0
10
5
6
6 0
4
6
3
7
2
8
8 0
Ø
GAIN Control
Adjusts input gain for proper signal level.
1
9
0
10
5
4
6
3
7
Polarity Reverse Switch
Inverts the polarity of both the microphone and line inputs.
2
8
1
9
0
10
-
0
+
HF
8
8
8 0 Hz High Pass Switch
Reduces all low frequency content at a 12db per octave rate
referenced to 80Hz (-3db point).
PRE
AUX SENDS
16
16
3 HM
6
1 .5
PAN
1K
HF Equalizer Control
Boosts or cuts high frequency content at 10kHz.
400
400
8K
LM
1
MUTE
MID EQ Level and Sweep Controls
Control the degree of boost or cut of Mid Frequency content
and reference frequency. The outer knobs control the center
frequency which is variable between the frequencies printed
on the chassis. The inner knob adjusts the boost or cut.
250
2K
100
-
MONO
L- R
1 - 2
0
+
LF
8
8
16
16
3 - 4
LF Equalizer Control
Boosts or cuts low frequency content at 80Hz.
5 - 6
7 - 8
EQ IN Switch
Inserts the EQ section into the input channel signal. An asso-
ciated LED illuminates when the switch is down.
EQ IN
PFL
1
5
1 • 3
4
3
6
7
8
9
PEAK
SIG
2
1
0
AUX Level 1 • 3 / 2 • 4
10
5
2 • 4
4
3
6
Adjusts audio level of a mix for use as a monitor or an effect
send. The signal source for this mix may be selected pre or
post fader by an associated switch.
7
8
9
2
1
0
10
3 • 4
0
AUX ASSIGNMENT 3 • 4 Switch
Selects the first two Aux level controls between the Aux 1•3
mix bus and the Aux 2•4 mix bus.
POST
5
5
6
7
4
3
6
7
5
2
8
9
1
0
POST/ PRE Switch
Selects the Aux 1•3 and Aux 2•4 signal sources between post
and pre fader positions.
10
1 0
5
4
3
6
7
2
8
1
0
9
2 0
10
AUX 5 - 8 Individual Level Controls
Adjusts audio level of a mix for use as a monitor or an effect
send. The signal source for these mixes may be selected pre
or post fader by an associated switch.
5
4
3
6
7
8
3 0
4 0
PRE/ POST Switch
Selects the Aux 5 through 8 signal sources between pre and
post fader positions.
PAGE 10
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SP / TC / GT
Rea r Connect ions
C
ENTURY SERIES
PAN CONTROL
Positions the channel image between the left (odd) and right
(even) channel assignment.
Direct Out
This jack provides the direct output signal
(post fader & post mute) from the associat-
ed input channel.
MUTE Switch with LED
Mutes the channel and all send functions. This switch does not
affect the PFL switch or the Peak and Signal Present LED indi-
cators. The LED illuminates when the channel is muted from
the local mute switch or mute scene masters.
DIR OUT
Insert
This jack allows for the insertion of an
effect or signal processor into the audio path
of the associated input channel.
INSERT
MONO Bus Assign Switch
Assigns the post-fader input signal directly to the Mono Clean
bus.
Bal Line In
This jack accepts balanced and unbalanced
line level inputs and delivers it into the
associated input channel.
BAL LINE IN
Bus Assign Switches (L/ R, 1 -8 )
Assigns the post Pan Signals to the mix bus in odd/even pairs.
Pan controls assignment between these two mix buses with
extreme left pan assigning signal exclusively to the odd mix
bus and extreme right pan assigning signal exclusively to the
even mix bus. When the pan is in its center position, signal is
fed equally to the odd (left) and even (right) mix bus. When
used in stereo applications, the channel signal may be located
anywhere within the stereo image as controlled by the Pan con-
trol.
Bal Mic In
BALMIC IN
This connector accepts balanced micro-
phone inputs for the associated input chan-
nel.
PFL Switch
Samples the channel’s signal pre-fader and allows for monitor-
ing within the master section of the console. This signal is not
affected by the Mute Switch. When depressed, the signal level
can be seen on the Left/Right meters, and heard via the mixer’s
headphone or local monitor output. When this PFL Switch is
depressed, the channel PEAK LED indicator illuminates at a
lower intensity. When used as a status indicator of switch posi-
tion, the Peak LED indicating circuit remains fully operational
by illuminating at a much higher intensity than its use as a PFL
status indicator.
PEAK LED Indicator
Illuminates RED when any of the points monitored come with-
in 3db of the clipping point. Signal is sampled after the input
preamplifier stage, after the EQ section, and after the fader.
This LED also serves as a PFL ON indicator, but at a much
lower intensity than when it is used to indicate clipping.
SIGNAL PRESENT LED
Constantly displays level activity of the input channel by vary-
ing in intensity.
1 0 0 mm Fader
Used for control of all outputs of the channel except those Aux
output sections selected by switch to a pre fader position. (The
Insert Output level is not affected by the fader position.)
PAGE 11
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SP / TC / GT
C
ENTURY SERIES
GT Input M odule
The GT input Module is the most feature-filled within the
Century Series. Designed for demanding FOH applications,
the GT Series retains the simplicity of the whole Crest
Console line while offering all the features of a high-end unit.
LINE Switch
Selects between the Balanced XLR Microphone Input con-
nector and the Balanced Line Input 1/4" TRS connector.
6
7
8
LINE
+48V
PAD
3
2
8
9
4 8 V Phantom Power Switch
Turns on 48V Phantom Power, required by certain micro-
phones for proper operation.
1
0
10
5
4
6
3
7
GAIN
20
2
8
30
1
9
10
PAD Switch
Introduces a -15 dB attenuation to the mic input signal.
0
10
6
6 0
5
4
6
3
7
8 0
Ø
2
8
GAIN Control
Adjusts input gain for proper signal level.
1
9
0
10
5
4
6
3
7
2
8
8 0 Hz High Pass Switch
Reduces all low frequency content at a 12db per octave rate
referenced to 80Hz (-3db point).
PEAK
1
9
0
10
4
HF
10
AUX 8
DIRECT
3
PRE
Polarity Reverse Switch
Inverts the polarity of both the microphone and line inputs.
2K
20K
AUX SENDS
PAN
HM
1 .5
3
6
1K
PEAK/ SHELVE HF Switch
Used for switching the high frequency EQ between the nor-
mal shelving setting to a peak setting.
400
400
8K
LM
1
250
MUTE
Four-Band Sweep Equalizer Controls
There are two knobs for each of the four bands. The outer
knobs control the center frequency which is variable between
the frequencies printed on the chassis. The inner knob adjusts
the boost or cut. The center frequencies are printed on the
chassis around the outer knob.
2K
100
150
MONO
L- R
LF
3
100
6
1 - 2
800
40
3 - 4
5 - 6
7 - 8
PEAK
PEAK/ SHELVE LF Switch
Used for switching the low frequency EQ between the nor-
mal shelving setting to a peak setting.
EQ IN
PFL
1
5
4
1 • 3
6
6
3
2
7
8
9
PEAK
SIG
1
EQ IN Switch
Inserts the EQ section into the input channel signal. An asso-
ciated LED illuminates when the switch is down.
0
10
5
2 • 4
4
3
7
8
9
2
1
0
10
AUX Level 1 • 3 / 2 • 4
3 • 4
0
Adjusts audio level of a mix for use as a monitor or an effect
send. The signal source for this mix may be selected pre or
post fader by an associated switch.
A
POST
B
C
D
5
5
6
7
4
6
7
5
3
2
8
9
1
AUX ASSIGNMENT 3 • 4 Switch
Selects the first two Aux level controls between the Aux 1•3
mix bus and the Aux 2•4 mix bus.
0
4
10
10
5
6
3
7
2
8
1
9
2 0
SAFE
0
10
POST/ PRE Switch
Selects the Aux 1•3 and Aux 2•4 signal sources between post
and pre fader positions.
5
4
6
SCENE
MUTE
SELECT
3
7
8
3 0
4 0
AUX 5 - 8 Individual Level Controls
Adjusts audio level of a mix for use as a monitor or an effect
send. The signal source for these mixes may be selected pre
or post fader by an associated switch.
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SP / TC / GT
C
ENTURY SERIES
Aux 8 Direct Switch
Scene Mute Assignments
Removes the Aux 8 signal from the Aux 8 bus and assigns to Assign the input channel to any of the four scene mute groups.
the direct out 1/4" connector on the rear panel.
Scene mute combines with the module’s local mute button, and
actuates the local mute LED.
PRE/ POST Switch
Selects the Aux 5 through 8 signal sources between pre and
post fader positions.
Scene Mute Safe Switch
Disables any selected scene mute assignments. An associated
green LED indicates the channel is in a safe state.
PAN CONTROL
Positions the channel image between the left (odd) and right
(even) channel assignment.
Rea r Connect ions
MUTE Switch with LED
Direct Out
This jack provides the direct output signal
(post fader & post mute) from the associat-
Mutes the channel and all send functions. This switch does not
affect the PFL switch or the Peak and Signal Present LED indi-
cators. The LED illuminates when the channel is muted from
the local mute switch.
ed input channel.
DIR OUT
Insert
This jack allows for the insertion of an
effect or signal processor into the audio path
MONO Bus Assign Switch
Assigns the input signal directly to the Mono Clean bus.
INSERT
of the associated input channel.
Bus Assign Switches (L/ R, 1 -8 )
Assigns the post Pan Signals to the mix bus in odd/even pairs.
Pan controls assignment between these two mix buses with
extreme left pan assigning signal exclusively to the odd mix
bus and extreme right pan assigning signal exclusively to the
even mix bus. When the pan is in its center position, signal is
fed equally to the odd (left) and even (right) mix bus. When
used in stereo applications, the channel signal may be located
anywhere within the stereo image as controlled by the Pan con-
trol.
Bal Line In
This jack accepts balanced and unbalanced
line level inputs and delivers it into the
associated input channel.
BAL LINE IN
Bal Mic In
BALMIC IN
This connector accepts balanced micro-
phone inputs for the associated input chan-
nel.
PFL Switch
Samples the channel’s signal pre-fader and allows for monitor-
ing within the master section of the console. This signal is not
affected by the Mute Switch. When depressed, the signal level
can be seen on the Left/Right meters, and heard via the mixer’s
headphone or local monitor output. When this PFL Switch is
depressed, the channel PEAK LED indicator illuminates at a
lower intensity. When used as a status indicator of switch posi-
tion, the Peak LED indicating circuit remains fully operational
by illuminating at a much higher intensity than its use as a PFL
status indicator.
PEAK LED Indicator
Illuminates RED when any of the points monitored come with-
in 3db of the clipping point. Signal is sampled after the input
preamplifier stage, after the EQ section, and after the fader.
This LED also serves as a PFL ON indicator, but at a much
lower intensity than when it is used to indicate clipping.
SIGNAL PRESENT LED
Constantly displays level activity of the input channel by vary-
ing in intensity.
1 0 0 mm Fader
Used for control of all outputs of the channel except those Aux
output sections selected by switch to a pre fader position. (The
Insert output level is not affected by the fader position.)
PAGE 13
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SP / TC / GT
C
ENTURY SERIES
GT S t er eo Input M odule
The GT Stereo Input Module is essentially two GT Input
Modules fit into one module space. This module is very use-
ful for accepting remote feeds, effects inputs and other sig-
nals that require stereo handling.
+4 8 V
LINE
4 8 V Phantom Power Switch
Turns on 48V Phantom Power for both L and R XLR inputs,
required by certain microphones for proper operation.
XLR
PAD
3
2 0
2
8
3 0
LINE Switch
1
9
1 0
0
10
Selects between the Balanced XLR Microphone Input con-
nector and the Balanced Line Input 1/4" TRS connector for
both L and R channels.
5
6
7
8
4
6
6
6 0
3
7
2 0
GAIN
3 0
2
8
1
9
1 0
0
10
5
6
6 0
XLR PAD Switch
Introduces a -20 dB drop to the mic input signal for both L
and R XLR inputs.
4
6
3
7
2
8
8 0
Ø
1
9
0
10
5
4
6
5
10
3
7
L GAIN & R GAIN Controls
Adjusts input gain for proper signal level for both L and R
inputs.
3
2
8
15
1
9
0
10
1K
20K
HF
MONO
O
+
W ID
8
8
8 0 Hz High Pass Switch
For both input channels, reduces all low frequency content at
a 12db per octave rate referenced to 80Hz (-3db point).
16
16
STR
REV
1K
3
BAL
600
5
Polarity Reverse Switch
300
8K
MID
For both input channels, inverts the polarity of both the
microphone and line inputs. An internal jumper selects
between Left channel only or both Left & Right channels.
O
+
MUTE
8
8
MONO
L- R
16
16
150
300
Three-Band Equalizer Controls
100
6
1 - 2
The equalization controls in this module act upon both L and
R stereo channels at once. The upper band is a fixed shelving
EQ with one control knob. The middle and low frequency EQ
bands are set up as sweep EQ’s: the lower knob controls the
gain or cut as in the fixed EQ; while the upper knob controls
the center frequency adjusted by the inner knob. These center
frequencies are printed on the chassis around the upper knob.
1K
40
O
3 - 4
5 - 6
7 - 8
LF
+
8
8
16
16
EQ IN
PFL
1
5
4
1 • 3
6
3
2
7
8
9
PEAK
SIG
1
EQ IN Switch
0
10
5
Inserts the EQ section into both L and R input channel sig-
nals at once. An associated LED illuminates when the switch
is down.
2 • 4
4
6
3
7
8
9
2
1
0
1 0
POST
0
AUX Level 1 • 3 / 2 • 4
A
B
C
D
STEREO
Adjusts audio level of a mix for use as a monitor or an effect
send. The signal source for this mix may be selected pre or
post fader by an associated switch. The left channel is sent to
the odd Auxes, and the right channel is sent to the even
Auxes.
5
5
6
7
4
5
3
2
8
1
9
0
4
10
10
5
6
7
6
3
7
2
8
1
9
POST/ PRE Switch
Selects the Aux 1•3 and Aux 2•4 signal sources between post
and pre fader positions.
2 0
SAFE
0
10
5
SCENE
MUTE
SELECT
4
6
3
7
8
3 0
4 0
STEREO Switch
AUX 5-8 Individual Level Controls normally send a summed
(L+R) signal to the AUX outputs. When the STEREO switch
is depressed, AUX 5 and 6 become a ‘right’ send and ‘left’
send respectively. This can be used for a stereo effects send.
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SP / TC / GT
C
ENTURY SERIES
AUX 5 - 8 Individual Level Controls
SIGNAL PRESENT LED
Adjusts audio level of a mix for use as a monitor or an effect Constantly displays level activity of the input channel by vary-
send. The signal source for these mixes may be selected pre or ing in intensity.
post fader by an associated switch.
1 0 0 mm Fader
Used for control of all outputs of the channel except those Aux
W ID(TH) Control
When used together with the BAL control, the WID control output sections selected by switch to a pre fader position. (The
provides a unique way to configure stereo panning. When Insert output level is not affected by the fader position.)
turned all the way counter-clockwise, this control convention-
Scene Mute Assignments
ally assigns the left signal to the left (odd) channel assignment,
Assign the input channel to any of the four scene mute groups.
and the right signal to the right (even) channel assignment.
Scene mute combines with the module’s local mute button, and
When adjusted to the ‘twelve o’clock’ position, left and right
actuates the local mute LED.
signals are panned straight up the middle, effectively summing
Scene Mute Safe Switch
them to mono. When this knob is turned all the way clockwise,
the left and right signals are ‘flip-flopped’, left being assigned Disables any selected scene mute assignments. An associated
to the right (even) side, and the right side being assigned to the green LED indicates the channel is in a safe state.
left (odd) side.
BAL Control
Positions the entire channel image between the left (odd) and
right (even) channel assignment. Together with the WID con-
trol, this gives total control of the stereo image.
Rea r Connect ions
Direct Out
This jack provides the direct output signal
(post fader & post mute) from the associated
input channel.
INSERT L
MUTE Switch with LED
Mutes the channel and all send functions. This switch does not
affect the PFL switch or the Peak and Signal Present LED indi-
cators. The LED illuminates when the channel is muted from
the local mute switch.
Insert
This jack allows for the insertion of an effect
or signal processor into the audio path of the
associated input channel.
INSERT R
MONO Bus Assign Switch
Assigns the input signal directly to the Mono Clean bus.
BAL LINE IN L
Bal Line In
This jack accepts balanced and unbalanced
line level inputs and delivers it into the asso-
ciated input channel.
Bus Assign Switches (L/ R, 1 -8 )
Assigns the post Pan Signals to mix bus in odd/even pairs. Pan
controls assignment between these two mix buses with extreme
left pan assigning signal exclusively to the odd mix bus and
extreme right pan assigning signal exclusively to the even mix
bus. When the pan is in its center position, signal is fed equally
to the odd (left) and even (right) mix bus. When used in stereo
applications, the channel signal may be located anywhere with-
in the stereo image as controlled by the Pan control.
BAL LINE IN R
Bal Mic In
This connector accepts balanced microphone
inputs for the associated input channel.
BAL MIC IN L
BAL MIC IN R
PFL Switch
Samples the channel’s signal pre-fader and allows for monitor-
ing within the master section of the console. This signal is not
affected by the Mute Switch. When depressed, the signal level
can be seen on the Left/Right meters, and heard via the mixer’s
headphone or local monitor output. When this PFL Switch is
depressed, the channel PEAK LED indicator illuminates at a
lower intensity. When used as a status indicator of switch posi-
tion, the Peak LED indicating circuit remains fully operational
by illuminating at a much higher intensity than its use as a PFL
status indicator.
PEAK/ PFL LED Indicator
Illuminates RED when any of the points monitored come with-
in 3db of the clipping point. Signal is sampled after the input
preamplifier stage, after the EQ section, and after the fader.
This LED also serves as a PFL ON indicator, but at a much
lower intensity than when it is used to indicate clipping.
PAGE 15
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SP / TC / GT
C
ENTURY SERIES
4
6
GROUP
+9
+6
+3
0
-3
-6
-9
-1 2
-1 5
-1 8
PAN
6 LEVEL
5
4
3
1
7
8
9
2
0
10
MUTE
PFL
GAIN
2
5
4
6
3
1
7
PEAK
SIG
2
8
9
0
10
EFX RETURN
PAN
- 0 +
HF
8
8
16
16
- 0 +
LF
8
8
MUTE
16
16
MONO
L- R
MONO
L- R
1 - 2
3 - 4
5 - 6
7 - 8
PFL
2
1 • 3
5
5
4
6
3
1
7
PEAK
SIG
2
8
9
0
10
6
10
2 • 4
4
3
1
7
2
8
9
0
10
3 • 4
POST
5
1 0
PAN
2 0
6 LEVEL
5
4
3
7
8
3 0
4 0
PAGE 16
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SP / TC / GT
Group Peak & Signal LED’s
C
ENTURY SERIES
S P / TC Gr oup M odules
The red LED indicates that the group signal is within 3dB of
the clipping point. The green LED constantly displays the level
of signal activity by varying in intensity.
Since there are only minor differences between the SP and TC
input modules, these two models share the same group module.
An eight bus console will have eight of these modules where a
four bus console will only have four. The number of the group
is indicated on the PFL switch.
Group Fader
Controls the final output signal of the group.
Group Meter
Monitors the post-fader output of the group via a ten-segment
LED array.
Rea r Connect ions
Group Out
This connector carries the post-fader output
signal from the associated group module.
Effect Return Gain
Controls the gain on the signal returning from an attached
effect.
Group Insert
GROUP OUT
This jack allows for the insertion of an effect
or signal processor into the audio path of the
associated group.
Effect Return EQ
Alters the effect return signal pre-fader via two fixed-frequen-
cy (10kHz and 80 Hz) controls.
GROUP INSERT
EFX Return
Effect Return Assignments
Assign the post-pan, post fader, effect return signal to the mix
bus.
These two connectors allow for effect signals
to be brought back into the board. The 1/4"
TRS jack accepts a balanced or unbalanced
signal at -10 dB level and delivers the signal
to the EFX return section. The female XLR
Effect Aux Levels
Controls the level of effect return signal sent to Auxes 1-4.
EFX RETURN
connector accepts a balanced signal at +4dB
level and delivers the signal to the EFX
return section of the group.
Aux 3 • 4 Switch
Switches the Effect Aux Levels between 1•2 and 3•4.
Pre/ Post Switch
Selects the effect return signal between pre and post Effect
Level Control, for use with Aux's.
Effect Pan
Adjust the proportion of effect return signal being sent to the
Left (odd) and Right (even) mix buses.
Effect Level
Adjusts the final effect return signal level.
Effect Mute
Mutes the effect return signal.
Effect PFL
Allows for Pre Fader Listening of the effect return signal.
Effect Peak & Signal LED’s
The red LED indicates that the effect signal is within 3dB of
the clipping point. The green LED constantly displays the level
of signal activity by varying in intensity.
Group Pan
Used to position group image between the Left and Right out-
put assignments
Group Mute
Mutes the group signal, except for the group insert send.
Group Assignments
Assigns the group signal to the Left, Right, and/or Mono out-
puts.
Group PFL
Allows for Pre Fader Listening of the group signal
PAGE 17
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SP / TC / GT
C
ENTURY SERIES
GT Gr oup M odule
GROUP
The GT group module has many of the same features as the
SP/TC group module. Primarily it is the Matrix Section and
the Scene Mute controls that separate this group module from
the SP/TC. An eight bus console will have eight of these
modules where a four bus console will only have four. The
number of the group is indicated on the PFL switch.
+9
+6
+3
0
-3
-6
-9
Group Meter
Monitors the post-fader output of the group via a ten-segment
LED array.
-1 2
-1 5
-1 8
PAN
Matrix Levels (A, B)
Adjusts the level of group signal sent to the respective
matrix.
A
5
4
6
3
1
7
2
2
8
9
LEVEL
0
10
6
5
4
6
3
1
7
8
9
B
5
4
Effect Return Gain
Controls the gain on the signal returning from the attached
effect
2
3
1
7
8
0
10
9
0
10
MUTE
PFL
MATRIX
Effect Return EQ
Alters the effect return signal pre-fader via two fixed-fre-
quency (10kHz and 80 Hz) controls.
GAIN
5
1
4
6
3
7
8
9
PEAK
SIG
2
1
0
10
EFX RETURN
PAN
Effect Return Assignments
Assign the post-pan, post fader, effect return signal to the
mix bus.
- 0 +
HF
8
8
16
16
- 0 +
LF
8
Effect Aux Sends
Controls the level of effect return signal sent to Auxes 1-4.
8
MUTE
16
16
MONO
L- R
Aux 3 • 4 Switch
Switches the Aux Levels between 1•3 and 2•4.
MONO
L- R
1 - 2
GROUP
XLR
MATRIX
POST
Pre/ Post Switch
Selects the effect return signal between pre and post Effect
Level Control.
3 - 4
FADER
REVERSE
5 - 6
Effect Pan
Adjust the proportion of effect return signal being sent to the
Left (odd) and Right (even) mix buses.
7 - 8
PFL
1
1 • 3
5
5
4
6
3
1
7
PEAK
SIG
2
8
9
Effect Level
Adjusts the final effect return signal level.
0
10
6
2 • 4
4
3
1
7
2
8
Effect Mute
Mutes the effect return signal.
9
0
10
3 • 4
POST
Effect PFL
Allows for Pre Fader Listening of the effect return signal.
A
B
C
D
5
Effect Peak & Signal LED’s
The red LED indicates that the effect signal is within 3dB of
the clipping point.
10
PAN
The green LED constantly displays the level of signal activity
by varying in intensity.
2 0
SAFE
LEVEL
SCENE
MUTE
EFX
5
4
6
3
7
8
9
2
Group Pan
Used to position group image between the Left and Right
output assignments.
3 0
4 0
RETURN
Group Mute
Mutes the group signal except for the group insert send.
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SP / TC / GT
Rea r Connect ions
C
ENTURY SERIES
Group Assignments
Assigns the group signal to the Left, Right, and or Mono out-
puts.
Group Out
This connector carries the post-fader output
signal from the associated group module.
Group XLR
Turns on the balanced XLR output.
Group Insert
GROUP OUT
Matrix Pre/ Post
Switches the Matrix sends between pre and post-fader settings.
This jack allows for the insertion of an effect
or signal processor into the audio path of the
associated group.
Fader Reverse w/ LED
Swaps functions between the Effect Level control and the
group fader; i.e., one becomes the other and vice versa.
GROUP INSERT
EFX Return
These two connectors allow for effect signals
to be brought back into the board. The 1/4"
TRS jack accepts a balanced or unbalanced
signal at -10 dB level and delivers the signal
to the EFX return section. The female XLR
connector accepts a balanced signal at +4dB
level and delivers the signal to the EFX
return section of the group.
Group PFL
Allows for Pre Fader Listening of the Group signal.
Group Peak & Signal LED’s
The red LED indicates that the group signal is within 3dB of
the clipping point.
EFX RETURN
The green LED constantly displays the level of group signal
activity by varying in intensity.
-1 0
+4
Bus In
This connector accepts a balanced signal at
+4dB level, and then sums it with all the
other signals assigned to the associated
groups.
Group Fader
Controls all post-fader group signal outputs.
EFX Return Scene Mute
BUS IN
Assignments
Assign the EFX return signal to any of the four scene mute
groups. Scene mute combines with the effect’s local mute but-
ton, and actuates the local mute LED.
EFX Return Scene Mute Safe Switch
Disables all selected EFX scene mute assignments. An associ-
ated green LED indicates the return is in a safe state.
PAGE 19
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SP / TC / GT
C
ENTURY SERIES
MATRIX
+9
+6
+3
0
4
-3
-6
-9
-1 2
-1 5
-1 8
5
4
3
7
2
8
1
9
0
1
GROUPS 1 -4
5
1
2
4
6
3
7
GROUPS 5 -8
5
2
8
5
4
6
6
6
1
9
3
7
0
1
2
2
2
8
5
4
6
1
9
3
7
0
1
1
1
2
8
5
6
7
8
4
1
9
3
7
0
1
8
MATRIX AUX IN
1
9
0
MAINS
5
4
5
L
4
6
3
7
3
7
8
2
8
1
9
1
9
0
0
1
5
4
6
5
R
3
4
6
7
3
7
2
8
2
8
1
9
1
9
0
1
0
1
MUTE
MONO
5
4
6
3
7
8
9
2
1
0
1
5
4
6
3
7
8
9
2
1
0
1
TB ENB
STR
PGM IN
LEFT
|
MONO
|
RIGHT
PFL
1
5
5
5
4
6
6
6
3
7
PEAK
SIG
2
8
1
9
0
1
1
1
2
3
4
4
3
7
2
8
1
9
0
4
0
3
7
2
8
1
9
0
5
5
4
6
3
7
2
8
1
9
1 0
0
1
GROUPS 1 -4
GROUPS 5 -8
5
5
2 0
4
6
3
7
2
8
1
9
3 0
4 0
7
PAGE 20
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SP / TC / GT
C
ENTURY SERIES
M a t r ix M odule
SIGNAL PRESENT LED
Constantly displays level activity of the matrix by varying in
intensity.
The Matrix Module allows the creation of an independent mix
using the Main outputs (and an External Input) as signal
sources.
1 0 0 mm Fader
Used for control of all outputs of the channel. (The Insert out-
put level is not affected by the fader position.)
Matrix AUX IN Controls
Controls level of external balanced input signals.
L & R MAINS Controls
Controls level of post fader L & R signals from main section.
Rea r Connect ions
MONO MAINS Control
Controls the level of post fader Mono signal from main sec-
tion.
Matrix Out
This connector delivers a balanced signal
from the matrix module.
STR PGM IN Control
Controls level of Stereo Program being input into the matrix.
(These switches do not function on the SP/TC Consoles)
Matrix Insert
This jack allows for the insertion of an effect
or signal processor into the audio path of the
MATRIX OUT
matrix output.
LEFT/ MONO/ RIGHT Switches
Selects which main section signals are introduced into the
matrix. (These switches do not function on the SP/TC
Consoles)
MTX INSERT
Aux In 1
This connector accepts a balanced signal at
+4dB level, and then sums it with all the other
signals in the matrix output.
GROUPS 1 -4 Controls
Adjusts the level of Group signals 1-4 introduced into the
matrix.
Aux In 2
This connector accepts a balanced signal at
+4dB level, and then sums it with all the other
signals in the matrix output.
GROUPS 5 -8 Controls
Adjusts the level of Group signals 5-8 introduced into the
matrix.
AUX IN 1
AUX IN 2
MUTE Switch with LED
Mutes the output. This switch does not affect the PFL switch
or the Peak and Signal Present LED indicators.
TB ENABLE Control
Injects the talkback signal from the Master section into the
matrix.
PFL Switch
Samples the matrix signal pre-fader and allows for monitoring
within the master section of the console. This signal is not
affected by the Mute Switch. When depressed, the signal level
can be seen on the Left/Right meters, and heard via the mixer’s
headphone or local monitor output. When this PFL Switch is
depressed, the PEAK LED illuminates at a lower intensity.
When used as a status indicator of switch position, the Peak
LED indicating circuit remains fully operational by illuminat-
ing at a much higher intensity than its use as a PFL status indi-
cator.
PEAK LED Indicator
Illuminates RED when any of the points monitored come with-
in 3db of the clipping point. Signal is sampled after the input
preamplifier stage and after the fader.
This LED also serves as a PFL ON indicator, but at a much
lower intensity than when it is used to indicate clipping.
PAGE 21
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SP / TC / GT
C
ENTURY SERIES
9
1
9
LEFT
RIGHT
0
4
10
6
0
4
10
6
5
5
5
2
4
LEV
4
6
+9
+6
+3
0
+9
+6
+3
0
3
7
3
7
3
7
2
8
2
8
2
8
1
9
1
9
1
9
LAMP DIM
+20
0
10
0
10
0
10
AFL1
AFL2
AFL3
AFL4
-3
-3
-2 0
DC
-6
-6
MONO
L- R
POW ER
+48
-9
-9
+24
-1 2
-1 5
-1 8
-1 2
-1 5
-1 8
AFLON
5
AFLON
5
GROUPS
AUX
PFL ON
5
6
7
8
4
6
4
6
1 •
2
HEADPHONES
3
3
7
7
2
8
2
8
3 •
4
1
9
1
9
0
4
10
6
0
4
10
6
5
5
3
7
3
7
2
8
2
8
5
4
6
1
9
1
9
3
7
0
10
0
10
2
8
1
9
0
10
AFL5
AFL6
AFL5
AFL6
PHONES
5
ON
4
6
3
AFL ON
AUX
AFL ON
AUX
7
2
8
TALK BACK
CONTROL
1
9
MASTERS
MASTERS
0
10
LOCAL
MONITOR
PFL
DEFEAT
MUTE
MUTE
MUTE
DIM
MONO
MONO
MONO
MUTE
PFL ON
MONITOR
CONTROL
LEFT
PFL
RIGHT
PFL
MONO
PFL
5
5
1
2
5
6
3
4
4
6
4
PEAK
SIG
PEAK
SIG
PEAK
SIG
3
3
7
7
2
8
2
8
1
9
1
9
0
4
10
6
0
4
10
6
0
0
0
5
5
LEV
4
6
3
7
3
7
3
7
2
8
2
8
2
8
1
9
1
9
1
9
0
10
0
10
0
10
AFL1
AFL2
AFL3
AFL4
MONO
L- R
1 5
2 0
1 5
2 0
1 5
2 0
AFLON
5
AFLON
5
GROUPS
AUX
5
6
7
8
4
6
4
6
1 •
2
3
3
7
7
2
8
2
8
3 •
4
3 0
3 0
3 0
1
9
1
9
0
4
10
6
0
4
10
6
5
5
3
7
3
7
4 0
5 0
40
4 0
5 0
2
8
2
8
1
9
1
9
5 0
0
10
0
10
AFL5
AFL6
AFL5
AFL6
ON
A
PAGE 22
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SP / TC / GT
C
ENTURY SERIES
S P / TC M a s t er S ect ion
L/ R/ Mono Peak & Signal LED’s
Red LEDs indicate the signal is within 3dB of clipping point.
Left & Right Meters
Monitors the post-fader output of the Left & Right channels,
and any PFL’d or AFL‘d signals, via a ten-segment LED array.
The green LED indicates the level of signal activity by varying
in intensity.
L/ R/ Mono Faders
Adjust final signal level of the Right, Left and Mono outputs.
Power Indicators
These four LED’s indicate the status of the four types of power
used by Century Series Consoles.
Talkback Mic Input
Allows a microphone to be plugged in for use with the talk-
back system. This jack is located next to the headphone jack on
the front-right of the console under the arm rest.
Headphone J ack
Delivers right and left output, unless a PFL or AFL switch is
depressed. Whenever any signal is in PFL or AFL mode the
headphone jack will deliver that signal. An additional head-
phone jack is located underneath the hand rest on the right-
front part of the console.
Rea r Connect ions
Mono Out
Delivers balanced post-fader signal containing all signals
assigned to the Mono Clean Bus.
Headphone Level Control
Controls signal level delivered to the two headphone jacks.
Right Out
Delivers a balanced post-fader signal containing all signals
assigned to the right output.
Local Monitor Level Control
Controls signal level delivered to the local monitor outputs.
PFL Defeat
Disables PFL function to the local monitor, permitting local
monitor output to function as an additional left/right output.
Left Out
Delivers a balanced post-fader signal containing all signals
assigned to the left output.
Dim Switch
Introduces -12 dB attenuation into local monitor output. Local
monitors are automatically dimmed when Talkback is engaged.
Mono Insert
This jack allows for the insertion of a signal processor into the
path of the mono sub-mix.
Mono Switch
Switches local monitor from stereo mode to mono mode.
Right Insert
This jack allows for the insertion of an effect or signal proces-
sor into the audio path of the right sub-mix.
Local Monitor Mute
Mutes the local monitor signal output.
Left Insert
Aux Master Controls
Controls final output signal level of eight auxiliary outputs.
This jack allows for
the insertion of an
effect or signal
processor into the
Aux AFL Switches
MONO OUT
RIGHT OUT
LEFT OUT
Switch the eight auxiliary outputs to After Fader Listening
mode, via the normal PFL signal path. The AUXes can be
monitored as stereo pairs if both AFL switches are depressed.
If only one is depressed, that AUX is monitored in mono.
audio path of the
left sub-mix.
MONO INSERT
RIGHT INSERT
LEFT INSERT
Monitor Out
(R&L)
Talkback Level Control
Controls the level of talkback signal output, and dims the local
monitor, whether or not the Dim switch has been pressed.
MONITOR L OUT
AUX 3 OUT
AUX 4 OUT
AUX 1 OUT
AUX 2 OUT
These two connec-
tors deliver a bal-
anced signal from
the left and right
local monitor.
MONITOR
R
OUT
Talkback Assignment Switches
Assign the talkback signal to the outputs, groups and or auxes.
Talkback On/ Off Switch
Turns the talkback system on and off.
AUX 7 OUT
AUX 6 OUT
AUX 5 OUT
AUX 8 OUT
Aux 1 -8 Out
These eight connec-
tions provide the
balanced output sig-
nals from their
respective auxiliary
buses.
L/ R/ Mono Mute Switches
Mute outputs of the Left, Right and Mono signals respectively.
L/ R Mono Assignment Switches
Assign the Left and Right signals to the Mono output.
L/ R/ Mono PFL Switches
Allow for Pre Fader Listening of the Right, Left and Mono
output signals.
PAGE 23
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SP / TC / GT
C
ENTURY SERIES
16
16
LEFT
RIGHT
DIM
MONO
MUTE
+9
+6
+3
0
+9
+6
+3
0
3
4
7
8
LAMP DIM
+20
MONO
L- R
-3
-3
TB MIC
-2 0
DC
AUX
1 • 2
-6
-6
POW ER
PFLON
+48
AUX
3 • 4
-9
-9
AUX
MUTES
AUX
MUTES
MONITOR
CONTROL
+24
-1 2
-1 5
-1 8
-1 2
-1 5
-1 8
MATRIX
A- B
PFLON
EXT
OSC
HEADPHONES
5
1
2
5
3
4
BAL
4
6
4
6
5
5
5
5
6
4
6
3
3
4
6
4
A
7
7
A
B
A
B
EXTTB
INPUT
3
3
3
7
8
7
7
2
8
2
8
2
2
8
2
8
1
9
1
9
1
9
1
9
1
9
0
4
10
6
0
4
10
6
0
4
10
0
4
10
6
0
4
10
6
5
5
5
5
LEV
LEV
4
6
4
6
5
5
5
3
7
3
7
6
7
B
4
6
3
7
3
7
3
3
7
3
7
3
7
2
8
2
8
2
8
2
8
2
8
2
8
2
8
2
8
1
9
1
9
1
9
1
9
0
10
0
10
1
9
1
9
0
10
0
10
1
9
1
9
0
10
0
10
0
10
0
10
EXTTB
OUTPUT
MUTE
PFL
AFL1
AFL2
AFL3
AFL4
MATRIX
PHONES
MATRIX
MATRIX
MONO
L- R
GAIN
5
5
4
6
4
6
3
3
7
7
AUX SCENE
ACTIVE
AUX SCENE
ACTIVE
2
8
2
8
AFLON
5
AFLON
5
PEAK
SIG
GROUPS
1
9
1
9
0
10
0
10
AUX
1 • 2
- 0
+
+
HF
LOCAL
MONITOR
5
6
7
8
4
6
4
6
STEREO
PROGRAM IN
8
8
8
3
3
7
7
1
2
5
6
2
8
2
8
3 • 4
5 • 6
7 • 8
1
9
1
9
16
16
16
0
4
10
6
0
4
10
6
PFL
DEFEAT
- 0
LF
5
LEV
5
5
4
6
3
7
8
3
7
3
7
2
8
2
8
2
8
DIM
MATRIX
A
1
9
1
9
1
9
16
0
10
0
10
0
10
MONO
MUTE
3
4
7
8
1 • 2
3 • 4
B
AFL5
AFL6
AFL5
AFL6
MONO
L- R
AUX
1 • 2
ON
PFLON
AUX
3 • 4
AFL ON
AUX
AFL ON
AUX
AUX
MUTES
AUX
MUTES
MONITOR
CONTROL
BLEND
TALK BACK
CONTROL
MATRIX
A- B
L/
R
TO AUXES
MASTERS
MASTERS
5
A
4
6
EXT
OSC
3
7
2
8
5
5
1
2
5
5
3
4
BAL
4
6
4
6
1
9
3
3
7
7
0
10
EXTTB
INPUT
2
8
2
8
1
9
1
9
MUTE
MUTE
PFL
MUTE
MUTE
0
4
10
6
0
4
10
6
5
5
LEV
LEV
4
6
4
6
3
7
3
7
3
7
3
7
MONO
MONO
2
8
2
8
2
8
2
8
1
9
1
9
1
9
1
9
PEAK
SIG
0
10
0
10
0
10
0
10
EXTTB
OUTPUT
MUTE
PFL
AFL1
AFL2
AFL3
AFL4
MATRIX
POST
MATRIX
POST
MATRIX
POST
MATRIX
MASTERS
MONO
L- R
MONO
PFL
MUTE
LEFT
PFL
RIGHT
PFL
AFLON
5
AFLON
5
PEAK
SIG
GROUPS
AUX
1 • 2
5
6
7
8
PFL
4
6
4
6
STEREO
PROGRAM IN
3
3
7
7
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
2
8
2
8
3 • 4
5 • 6
7 • 8
1
9
1
9
0
4
10
6
0
4
10
6
5
LEV
5
5
5
4
B
7
4
6
6
0
0
0
3
7
3
7
3
7
3
2
8
2
8
2
8
2
8
9
MATRIX
A
1
9
1
9
1
9
1
0
10
0
10
0
10
0
10
1 • 2
3 • 4
B
AFL5
AFL6
AFL5
AFL6
A
B
C
D
1 5
2 0
1 5
2 0
1 5
2 0
ON
AFL ON
AUX
AFL ON
AUX
BLEND
TALK BACK
CONTROL
L/
R
TO AUXES
MASTERS
MASTERS
5
A
4
6
3
7
2
8
3 0
3 0
3 0
1
9
0
10
AUX
MUTE
MUTE
PFL
MUTE
MUTE
4 0
5 0
4 0
5 0
4 0
5 0
SCENE MUTE
MASTERS
MONO
MONO
PEAK
SIG
MATRIX
POST
MATRI
MATRIX
MATRIX
MASTERS
PAGE 24
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SP / TC / GT
C
ENTURY SERIES
GT M a s t er S ect ion
This master section is the control center for most of the GT’s
advanced functions.
Aux Master Controls
Controls final output signal level of the auxiliary outputs.
Aux AFL Switches
Switch the eight auxiliary outputs to After Fader Listening
mode, via normal PFL signal path. AUXes can be monitored as
stereo pairs if both AFL switches are depressed. If only one is
depressed, that AUX is monitored in mono.
Left & Right Meters
Monitors the post-fader output of the Left & Right channels,
and any PFL’d signals, via a ten-segment LED array.
Lamp Dim Control
Controls the intensity of the lighting devices plugged into the
XLR sockets on the light bar.
External Oscillator Switch
Turns on the internal oscillator or accepts signal from the1/4"
TRS Oscillator input jack.
Talkback Mic Input
External Talkback Input Switch
Selects the external talkback input XLR as an input signal to
the talkback section and overrides the Oscillator.
Allows for a gooseneck microphone to be plugged in for use
with the talkback system. An additional Talkback Mic Input
jack can be found next to the headphone jack on the front-right
of the console under the arm rest.
Stereo Program Balance
Adjusts balance of stereo signal from Stereo Program input.
Power Indicators
These four LED’s indicate the status of the four types of power
used by Century Series Consoles.
Stereo Program Level
Controls final output signal level of the Stereo Program.
Headphone J ack
Talkback Level Control
Controls the level of the selected talkback source.
Delivers right and left output, unless a PFL switch is
depressed. Whenever any signal is in PFL mode, the head-
phone jack will deliver that signal. An additional headphone
jack is located beneath the hand rest on the right-front part of
the console.
External Talkback Output Switch
Turns on the external talkback XLR.
Stereo Program Mute
Mutes the output of the stereo program.
Headphone Level Control
Controls the signal level delivered to the headphone jacks.
Stereo Program PFL
Allows Pre Fader Listening of the Stereo Program signal.
L, R & Mono Matrix Sends
Controls level of Right, Left and Mono signals sent to the two
matrices.
Talkback Assignment Switches
Assigns talkback signal to outputs, groups, auxes, or matrices.
Local Monitor Level Control
Controls level of signal delivered to the monitor outputs.
Blend Level
Controls level of L & R signal blended to assigned auxes.
Auxiliary Mutes
Mutes the respective auxiliary signals.
Blend Assignment Switches
Assigns the Left and Right signals to the respective auxes.
PFL Defeat
Disables PFL function to the local monitor, allowing local
monitor output to function as an additional left/right output.
Talkback On/ Off Switch
Turns the talkback system on and off, and dims local monitor,
whether or not Dim switch has been pushed.
Dim Switch
This switch introduces a -12 dB attenuation into the local mon-
itor and headphone outputs.
Matrix Master Levels (A&B)
Controls the final output level of the respective matrix.
Matrix Master Mutes (A&B)
Mutes the respective matrix signal.
Mono Switch
Switches the local monitor and headphone outputs from their
standard stereo mode to a mono mode.
Matrix Master PFL (A&B)
Allows Pre-Fader Listening of the respective matrix signal.
Stereo Program In Gain
Adjusts the gain of the Stereo Program In signal.
Scene Mute Master Switches
Turn on and off the four scene mutes.
Stereo Program In EQ
Two-band fixed frequency (10kHz and 80Hz) EQ that affects
the Stereo Program In signal.
Aux Scene Mute On/ Off Switch
Turns the Aux Scene Mute system on and off.
L/ R/ Mono Mute Switches
Mute outputs of Left, Right and Mono signals respectively.
Stereo Program In Assignments
Assigns the Stereo Program to the associated buses.
Local Monitor Mute
Mutes the local monitor signal output.
(Continued)
PAGE 25
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SP / TC / GT
C
ENTURY SERIES
GT M a s t er S ect ion (cont 'd)
Rea r Connect ions
L&R Mono Assignment Switches
Assign the Left and Right signals to the Mono output..
Matrix Out (A&B)
These two connectors deliver a balanced signal from the asso-
ciated matrix master.
L/ R/ Mono Matrix Post Switches
Switches the Left, Right and Mono matrix signals between pre
and post fader.
Mono Out
This connector delivers a balanced post-fader signal containing
all signals assigned to the Mono Clean Bus.
L/ R/ Mono PFL Switches
Allow for Pre-Fader Listening of the Left, Right and Mono
signals respectively.
Right Out
This connector delivers a balanced post-fader signal containing
all signals assigned to the right output.
L/ R/ Mono Peak & Signal LED’s
The red LED indicates that the signal is within 3dB of the clip-
Left Out
ping point. The green LED constantly displays the level of sig- This connector delivers a balanced post-fader signal containing
nal activity by varying in intensity.
all signals assigned to the left output.
L/ R/ Mono Faders
Matrix Insert (A&B)
Adjust final output signal level of Right, Left and Mono out- This jack allows for the insertion of an effect or signal proces-
puts.
sor into the audio path of the associated matrix.
Mono Insert
This jack allows for the insertion of a signal processor into the
path of the mono sub-mix.
Right Insert
This jack allows for the insertion of an effect or signal proces-
sor into the audio path of the right sub-mix.
Left Insert
This jack allows for the insertion of an effect or signal proces-
sor into the audio path of the left sub-mix.
MATRIX A OUT
MONO OUT
RIGHT OUT
LEFT OUT
Monitor Out (R&L)
These two connectors deliver a balanced signal from the left
and right local monitor.
INSERT A
MONO INSERT
RIGHT INSERT
LEFT INSERT
Aux 1 -8 Out
These eight connections provide the balanced output signals
from their respective auxiliary buses.
MATRIX B OUT
MONITOR L OUT
MONITOR R OUT
AUX 3 OUT
AUX 4 OUT
AUX 1 OUT
AUX 2 OUT
Ext. Talkback Out
This connector provides an external balanced signal from the
selected talkback source.
INSERT B
Ext. Talkback In
This connector accepts a balanced signal which is assignable to
any of the locations in the talkback system.
AUX 7 OUT
AUX 6 OUT
AUX 5 OUT
AUX 8 OUT
EXT TB OUT
EXT TB IN
STR PGM IN
OSC/ PINK IN
Stereo Program In
This jack accepts an unbalanced stereo line level signal for use
as warm-up or break music.
Oscillator / Pink Noise In
This connector accepts a balanced or unbalanced signal from
an oscillator or pink noise generator. This signal is assignable
via the talkback assignment switches.
PAGE 26
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SP
GT TC
Ap p e nd ix A
Te c hnic a l
Info rm a tio n
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SP / TC / GT
C
ENTURY SERIES
Gener a l S pecifica t ions -
S P Cons ole
Ar chit ect ’s & Engineer ’s
Specifica t ions - SP Cons ole
The following are the technical specifications for the Century
SP console.
The following text should be used when specifying a Century
SP in a bid or proposal.
The live sound console shall be constructed in a modular fashion and be
housed in a steel frame with molded plastic side panel/carrying handles.
The console shall be black with white labeling and utilize XLR lighting
device connectors. The console shall have an XLR talkback mic connector
and a headphone jack. These shall be located beneath the far right side of
the armrest.
Frequency Response
+0.0, -0.5dB, 20Hz to 20 kHz (referenced to 1kHz)
Total Harmonic Distortion
Mic input to Group output
20Hz to 20 kHz at +15dBu
<0.01%
All microphone inputs shall be electronically balanced and accessed via 3-
pin XLR connectors and have an EIN of -129 dBm. All line inputs shall be
electronically balanced and accessed via 1/4" TRS jacks. The insert points
shall be via 1/4" TRS jacks.
Noise (22Hz to 22kHz)
Mic EIN
Mix Bus Output Noise (20 ch routed)
Aux Bus Output Noise (20 ch routed)
-129 dBu
- 80 dBu
- 80 dBu
Each input channel shall have: a +48 volt phantom power switch, a -15 dB
mic pad switch, a 80Hz high pass filter switch, and 4-band fixed EQ
(80Hz, 300Hz, 2.7kHz, 10kHz) with an EQ In switch. Each input channel
shall also have: a FET controlled (10 millisecond ramp) mute switch with
LED, sub-group assignment switches, a L/R assignment switch, a dedicat-
ed mono assignment switch, a dynamic signal present LED and peak LED,
a PFL switch, and a 100mm long throw fader. Each input channel shall
have eight auxiliary sends which shall be controlled via six knobs and
three switches.The aux sends shall have a pre/post fader switch for every
four sends. The aux sends shall be selectable pre or post fader.
The console shall be available in four or eight bus configurations. Each
group module shall have a ten-segment LED meter array. The effect return
section of each group module shall have a gain control, a two-band fixed
EQ, sub-group assignment switches, a L/R assignment switch, a dedicated
mono assignment switch, two aux send controls, a pan control, a level con-
trol, a dynamic signal present LED and peak LED, and a PFL switch. The
remainder of the group module shall have a pan control, an FET controlled
(10 millisecond ramp) mute switch with LED, assignment switches for:
mono and L/R. A PFL switch, dynamic signal present LED and peak LED,
and a 100mm long throw fader shall also be provided on the group mod-
ule.
Crosstalk (Measured at 1kHz)
Channel Mute
Channel Fader Attenuation
Channel Routing
>102 dB
> 96 dB
> 85 dB
> 93 dB
Channel Aux Send Attenuation
Input/Output Impedances
Mic Input
Line Input
4kΩ balanced
>10kΩ balanced
140Ω balanced
Outputs
Input/Output Levels (0VU = +4 dBu, 1.23V RMS)
Mic Input Sensitivity
Line Input Sensitivity
Input Insertion Point Level
Output Insertion Point Level
Nominal Output Level
+ 4 to -62 dBu
+ 12 to -38 dBu
+ 4 dBu
- 2 dBu
+ 4 dBu
+28 dBu
Maximum Balanced Output Level
The master section shall be four modules in width and have the following
features: eight aux master controls with associated AFL switches, a
100mm long throw fader for each of the three master outputs and a com-
prehensive talkback system.
The power supply shall be housed in a 14 ga. steel chassis that shall occu-
py two 19" rack spaces. The power supply shall have the ability to be
daisy-chained to additional power supplies to provide a fail-safe operating
environment. Connection of two or more power supplies shall not require
additional interface hardware other than the provided cable.
Configur a t ions
SP Consoles are available in the following configurations:
Four Subgroup
Eight Subgroup
16, 24, 32, 36, 44, or 56 inputs
12, 20, 28, 32, 40, or 52 inputs
Optional stereo input modules and matrix modules are available.
The live sound console shall be: the Crest Audio Century SP.
APPENDIX A
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SP / TC / GT
Ar chit ect ’s & Engineer ’s
Specifica t ions - TC Cons ole
C
ENTURY SERIES
Gener a l Specifica t ions -
TC Cons ole
The following are the technical specifications for the Century The following text should be used when specifying a Century
TC console.
TC in a bid or proposal.
The live sound console shall be constructed in a modular fashion and
be housed in a steel frame with molded plastic side panel/carrying han-
dles. The console shall be black with white labeling and utilize XLR
lighting device connectors. The console shall have an XLR talkback
mic connector and a headphone jack. These shall be located beneath the
far right side of the armrest.
Frequency Response
+0.0, -0.5dB, 20Hz to 20 kHz (referenced to 1kHz)
Total Harmonic Distortion
Mic input to Group output
20Hz to 20 kHz at +15dBu
<0.01%
All microphone inputs shall be electronically balanced and accessed via
3-pin XLR connectors and have an EIN of -129 dBm. All line inputs
shall be electronically balanced and accessed via 1/4" TRS jacks. The
insert points shall be via 1/4" TRS jacks.
Noise (22Hz to 22kHz)
Mic EIN
Mix Bus Output Noise (20 ch routed)
Aux Bus Output Noise (20 ch routed)
-129 dBu
- 80 dBu
- 80 dBu
Each input channel shall have: a +48 volt phantom power switch, a -15
dB mic pad switch, a 80Hz high pass filter switch, a polarity reverse
switch and 4-band (LF-80Hz, LMF-100Hz-2kHz, HMF-400Hz-8kHz,
HF-10kHz) mid-sweepable EQ an EQ In switch. Each input channel
shall also have: a FET controlled (10 millisecond ramp) mute switch
with LED, sub-group assignment switches, a L/R assignment switch, a
dedicated mono assignment switch, a dynamic signal present LED and
peak LED, a PFL switch, and a 100mm long throw fader.
Each input channel shall have eight auxiliary sends which shall be con-
trolled via six knobs and four switches. The aux sends shall have a
pre/post fader switch for every four sends. The aux sends shall be
selectable pre or post EQ and pre or post mute. There shall be an Aux 8
direct switch that shall allow the Aux 8 rotary knob to directly control
the output of the 1/4" direct out TRS jack.
The console shall be available in four or eight bus configurations. Each
group module shall have a ten-segment LED meter array. The effect
return section of each group module shall have a gain control, a two-
band fixed EQ, sub-group assignment switches, a L/R assignment
switch, a dedicated mono assignment switch, two aux send controls, a
pan control, a level control, a dynamic signal present LED and peak
LED, and a PFL switch. The remainder of the group module shall have
a pan control, an FET controlled (10 millisecond ramp) mute switch
with LED, assignment switches for: mono and L/R. A PFL switch,
dynamic signal present LED and peak LED, and a 100mm long throw
fader shall also be provided on the group module.
Crosstalk (Measured at 1kHz)
Channel Mute
Channel Fader Attenuation
Channel Routing
>102 dB
> 96 dB
> 85 dB
> 93 dB
Channel Aux Send Attenuation
Input/Output Impedances
Mic Input
Line Input
4kΩ balanced
>10kΩ balanced
140Ω balanced
Outputs
Input/Output Levels (0VU = +4 dBu, 1.23V RMS)
Mic Input Sensitivity
Line Input Sensitivity
Input Insertion Point Level
Output Insertion Point Level
Nominal Output Level
+ 4 to -62 dBu
+ 12 to -38 dBu
+ 4 dBu
- 2 dBu
+ 4 dBu
Maximum Balanced Output Level
+28 dBu
The master section shall be four modules in width and have the follow-
ing features: eight aux master controls with associated AFL switches, a
100mm long throw fader for each of the three master outputs and a
comprehensive talkback system.
The power supply shall be housed in a 14 ga. steel chassis that shall
occupy two 19" rack spaces. The power supply shall have the ability to
be daisy-chained to additional power supplies to provide a fail-safe
operating environment. Connection of two or more power supplies
shall not require additional interface hardware other than the provided
cable.
Configur a t ions
TC Consoles are available in the following configurations:
Four Subgroup
Eight Subgroup
16, 24, 32, 36, 44, or 56 inputs
12, 20, 28, 32, 40, or 52 inputs
The live sound console shall be: the Crest Audio Century TC.
Optional stereo input modules and matrix modules are available.
APPENDIX B
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SP / TC / GT
C
ENTURY SERIES
Gener a l S pecifica t ions -
GT Cons ole
The following are the technical specifications for the Century
GT console.
Ar chit ect ’s & Engineer ’s
Specifica t ions - GT Cons ole
The following text should be used when specifying a Century GT
in a bid or proposal.
The live sound console shall be constructed in a modular fashion and be
housed in a steel frame with molded plastic side panel/carrying handles.
The console shall be black with white labeling and utilize XLR lighting
device connectors. The console shall have an XLR talkback mic connector
and a headphone jack. These shall be located beneath the far right side of
the armrest.
Frequency Response
+0.0, -0.5dB, 20Hz to 20 kHz (referenced to 1kHz)
Total Harmonic Distortion
Mic input to Group output
20Hz to 20 kHz at +15dBu
<0.01%
All microphone inputs shall be electronically balanced and accessed via 3-
pin XLR connectors and have an EIN of -129 dBm. All line inputs shall be
electronically balanced and accessed via 1/4" TRS jacks. The insert points
shall be via 1/4" TRS jacks.
Noise (22Hz to 22kHz)
Mic EIN
Mix Bus Output Noise (20 ch routed)
Aux Bus Output Noise (20 ch routed)
-129 dBu
- 80 dBu
- 80 dBu
Each input channel shall have: a +48 volt phantom power switch, a -15 dB
mic pad switch, a 80Hz high pass filter switch, a polarity reverse switch
and 4-band (LF-40-800Hz, LMF-100Hz-2kHz, HMF-400Hz-8kHz, HF-
1.5k-20kHz) sweepable EQ with peak/shelve switches on the high and low
controls and an EQ In switch. Each input channel shall also have: a FET
controlled (10 millisecond ramp) mute switch with LED, sub-group
assignment switches, a L/R assignment switch, a dedicated mono assign-
ment switch, a dynamic signal present LED and peak LED, a PFL switch,
4 scene mute switches (A-D), scene mute safe switch with LED, and a
100mm long throw fader.
Each input channel shall have eight auxiliary sends which shall be con-
trolled via six knobs and four switches. The aux sends shall have a
pre/post fader switch for every four sends. The aux sends shall be selec-
table pre or post EQ and pre or post mute. There shall be an Aux 8 direct
switch that shall allow the Aux 8 rotary knob to directly control the output
of the 1/4" direct out TRS jack.
The console shall be available in four or eight bus configurations. Each
group module shall have a ten-segment LED meter array. The effect return
section of each group module shall have a gain control, a two-band fixed
EQ, sub-group assignment switches, a L/R assignment switch, a dedicated
mono assignment switch, two aux send controls, a pan control, a level con-
trol, a dynamic signal present LED and peak LED, and a PFL switch. The
remainder of the group module shall have a pan control, an FET controlled
(10 millisecond ramp) mute switch with LED, assignment switches for:
mono, L/R, Group XLR and matrix post. It shall also have a fader reverse
switch with LED. A PFL switch, dynamic signal present LED and peak
LED, 4 scene mute switches (A-D), scene mute safe switch with LED, and
a 100mm long throw fader shall also be provided on the group module.
The master section shall be four modules in width and have the following
features: an 11x2 matrix, eight aux master controls with associated AFL
switches, eight aux scene mute switches with LED, a 100mm long throw
fader for each of the three master outputs, a fully assignable comprehen-
sive talkback system, a talkback mic connection, a headphone jack, stereo
program input control, and five scene mute master switches each with
LED.
Crosstalk (Measured at 1kHz)
Channel Mute
Channel Fader Attenuation
Channel Routing
>102 dB
> 96 dB
> 85 dB
> 93 dB
Channel Aux Send Attenuation
Input/Output Impedances
Mic Input
Line Input
4kΩ balanced
>10kΩ balanced
140Ω balanced
Outputs
Input/Output Levels (0VU = +4 dBu, 1.23V RMS)
Mic Input Sensitivity
Line Input Sensitivity
Input Insertion Point Level
Output Insertion Point Level
Nominal Output Level
+ 4 to -62 dBu
+ 12 to -38 dBu
+ 4 dBu
- 2 dBu
+ 4 dBu
Maximum Balanced Output Level
+28 dBu
Configur a t ions
GT Consoles are available in the following configurations:
The power supply shall be housed in a 14 ga. steel chassis that shall occu-
py two 19" rack spaces. The power supply shall have the ability to be
daisy-chained to additional power supplies to provide a fail-safe operating
environment. Connection of two or more power supplies shall not require
additional interface hardware other than the provided cable.
Four Subgroup
Eight Subgroup
16, 24, 32, 36, 44, or 56 inputs
12, 20, 28, 32, 40, or 52 inputs
The live sound console shall be: the Crest Audio Century GT.
Optional stereo input modules and matrix modules are available.
APPENDIX A
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SP / TC / GT
C
ENTURY SERIES
GT / TC / S P Block Dia gr a m
CERSTAUDIO
APPENDIX B
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SP / TC / GT
C
ENTURY SERIES
APPENDIX A
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SP / TC / GT
C
ENTURY SERIES
Rea r Views & Dim ens ions
A
.75in.
19mm
Size
24
A
B
33.55" 31.80"
43.15" 41.40"
52.75" 51.00"
57.55" 55.80"
67.15" 65.40"
81.55" 79.80"
32
40
44
52
64
Size
24
A
B
852mm
808mm
32
1096mm 1052mm
1340mm 1295mm
1462mm 1417mm
1706mm 1661mm
2071mm 2027mm
40
44
52
64
Crest Consoles Engineering,
May 5, 1997
1.5in./38mm
B
APPENDIX A
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SP / TC / GT
C
ENTURY SERIES
S P / TC/ GT US ER-OP TIONS
SP, TC, and GT consoles are shipped having standard configuration unless specified at time of order. These are ways that the
console configuration may be varied after manufacture. The items listed are internal options selected by gold jumper links.
Default is marked with a line on the board and is usually pins 1&2 of the three pin header.
In addition there are links for module function assignment. Take care to not disturb these when using USER OPTION links.
MODULE
All Inputs
LOCATION
M = Main board
C = Connector
M
M
M
M
C
OPTION TITLE
FUNCTION
Shipped with the option underlined
Aux sends with or without Mute
Pre & Post EQ
Send Group Post Mute Y/N
Fit links to enable local mutes
On or Off
Pre Source (SRC)Mute
Pre Source Select
Matrix Post Mute? Y/N
J8, Aux local Mute
Talkback XLR +48V
Group Outs
Left/Right Outs
Monitor Master
Optional Modules
Matrix Module
GT Stereo In
M
M
M
M
M
M
M
Cue (PFL switch)
Polarity Reverse
Aux 5-6 Select
PFL or AFL
L only or L+R
Mono sum Pre or Post Fader
Mono sum Pre or Post Fader
Pre EQ or Pre Fader
Pre EQ or Pre Fader
Yes or No
Aux 7-8 Select
SEL 1 Pre source L
SEL 2 Pre source R
Pre SRC (source) Mute?
IM P ORTANT
Output modules are pre-assigned at the Crest factory
These modules must always be installed in the correct positions. They are NOT interchangeable without being properly re-
assigned. Please contact the Crest Audio Service Department for more information.
APPENDIX A
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SP / TC / GT
C
ENTURY SERIES
Cons ole Dis a s s em bly
Though you shouldn’t have to disassemble the console, it is necessary to remove modules to change the jumper and switch set-
tings associated with the internally selectable options. The following steps detail the tasks involved when taking the console
apart.
ONE • Open t he a r m r es t
To properly remove one or many modules, the black painted
armrest must first be opened. To do this, the two thumb-
Opening the
Armrest
screws (see diagram at right) must be loosened from below.
Once these screws are loose, slide both of them a few inches to
the side (they will only move in one direction). Once the
screws have been moved the armrest will easily roll back
exposing the module screws beneath.
TW O • Rem ove t op m odule s cr ew
Once the armrest has been opened, there will be a single screw
Thumbscrews
holding each module in place. Remove the screw from the
module(s) you want to remove.
THREE • Rem ove r ea r s cr ews
On the back panel of the console there are two screws holding
each module in place (see diagram at right) Remove both
screws from each module you wish to remove.
Upper Screw
Light Bar
DIR OUT
DIR
INS
BA
BAL OUT LEFT
BAL OUT LEFT
BAL OUT
BAL OUT
BAL OUT
BAL OUT
INSRT SND
INSERT SEND
INSERT SEND
INSERT SEND
INSERT SEND
INSERT SEND
INSERT SEND
FOUR • Lift t he m odule(s ) out
As you lift the module out of the chassis three wires must be
detached before the module can be completely removed: 2
flat-wires (ribbon cables) and one ground wire.
BAL INSRT RTN
INSERT RETURN
INSERT RETURN
INSERT RETURN
INSERT RETURN
INSERT RETURN
INSERT RETURN
BAL LINE IN
BA
MONITOR
MONITOR
A
LEFT
RETURN
RETURN
1
BAL OUT RIGHT
MONITOR
MONITOR
B
LEFT
BAL OUT RIGHT
LIFT
PIN
LIF
PIN
1
BAL MIC IN
BA
B
RIGHT
A
RIGHT
2
INSERT SEND
INSERT SEND
BAL MIC OUT
BA
OSC IN
EXT TB IN
EXT TB OUT
INSERT RETURN
INSERT RETURN
The flat-wires are removed by flipping the latches on the ends
of the connectors. Once the tabs have been flipped the connec-
tor should pull off easily.
The ground wire (green) is a spade lug which pulls off.
Lower Screw
FIVE • P ut t ing it a ll ba ck t oget her
Re-assembling a Century Console is as easy as taking it apart, but only if you know where everything goes. If you are going to
be removing a number of modules, consider replacing the first before removing the second. Reversing the above steps should
result in the console being as well put together as it was when it left the factory.
IM P ORTANT
Output modules are pre-assigned at the Crest factory
These modules must always be installed in the correct positions. They are NOT interchangeable without being properly re-
assigned. Please contact the Crest Audio Service Department for more information.
APPENDIX A
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SP TC GT
Ap p e nd ix B
Glo ssa ry
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ENTURY SERIES
(green) are typically used for effect sends. Each effect return
section has Aux 1-4 Send controls, which could be used for
adding effect return signal to the monitor mix. Internal jumpers
select between pre/post EQ.
GLOS S ARY
The following glossary explains the features and functions
found on Century Series front of house consoles.
8 0 Hz High Pass Switch
Bus Assignment Switches
When depressed, this switch attenuates all low frequency con-
tent at a 12db per octave rate referenced to 80Hz. This control
is useful with live microphones, as it helps reduce undesirable
low frequency "rumble", usually is transmitted to the micro-
phone by way of its microphone stand. High quality micro-
phones employ internal shock mounts which lessen this prob-
lem, but it still remains to some degree. If this material is not
removed, the low frequency content tends to make the amplifi-
er and speaker systems work harder.
Wherever these switches occur, they assign the post Pan pot
signals to odd and even mix buses. The Pan pot controls
assignment between odd and even mix buses with extreme left
assigning signal exclusively to the odd mix bus and extreme
right the even mix bus. It is a common practice to assign all
effect return channels to a sub group channel. This enables the
overall amount of effect signal to be controlled from a single
fader location. Between musical numbers, it is possible to turn
off the effects with this group fader or group mute switch or to
vary the amount of overall effect return in reference to the dry
original signals, using the group fader control.
1 0 0 mm Fader See Fader
4 8 Volt Phantom Power
This switch turns on the +48V used to power some micro-
phones. See XLR Microphone Input for more information.
DC Power Indicators
Each Century Series console uses a variety of electrical volt-
ages which are fed to the console from the power supply. The
status of each operating voltage (+20, -20, +48, +24) is indicat-
ed by four LED’s on the master module. If the console ever
behaves abnormally, first check these LED’s to make sure that
the power supply is providing the proper voltages.
Auxiliary 3 • 4 Switch
This switch toggles the two upper Aux Send controls between
1,2 and 3,4. With the switch up, the two Send controls feed
Aux 1 and 2. With the switch down, the two controls feed Aux
3 and 4.
Dim Switch
Auxiliary 8 Direct Switch
This GT Master Section switch produces a -12dB attenuation
in signal to the local monitor. This feature is useful for tempo-
rary lowering of local monitor levels without actually adjusting
any pots or faders. (Local monitors are automatically dimmed
when Talkback button is pressed.)
This switch disconnects the Aux 8 level control from the Aux
8 mix bus and instead is used to control the Direct Output of
the channel. Normally the Direct Out jack is post-fader. When
the Aux 8 Direct switch is depressed the Aux 8 level control
assumes output control of the direct out signal. The Aux 8 con-
trol is fed pre-fader.
Direct Out J ack
Each input module has an unbalanced 1/4 direct out jack. The
output from this jack is post-fader unless the AUXILIARY 8
DIRECT switch is depressed. When this switch is down the
output is controlled by the Aux 8 pot. See AUXILIARY 8
DIRECT for more information on that switch.
Auxiliary Bus
The Aux Bus carries signal from the Aux Send controls to the
Aux outputs on the rear panel of the Master Section. A typical
setup would entail using the Aux 1-4 sends for monitor mixes
while Aux 5-8 are used for effect sends. If a separate monitor
mixer were being used, Auxes 1-4 could be used for additional
effect sends. Effects can be returned via the EFX Return sec-
tion of the group modules or through spare input modules.
Effect Auxiliary Level Control
See AUXILIARY SEND CONTROL
Effect Return EQ
Auxiliary Mute Switches
Each effect return section has a two-band fixed EQ. These
High and Low frequency controls are centered at 10kHz and
80Hz respectively.
The Master Section of the GT consoles have mute switches for
each Aux send. When depressed, this switch mutes the corre-
sponding Aux Send Master. When the mute is engaged no sig-
nal leaves the associated Aux out jack and a red LED illumi-
nates to the left of the switch. These mute switches are active
only if the Aux Mute Master switch on the Master Module is
depressed.
Effect Return Gain
This control adjusts the gain on the signal returning from the
effect. Use the effect return signal present and peak LED’s to
set the gain properly.
Effect Return Subgroup Assignments
Much like the switches on each input module, these switches
assign the corresponding effect return to any or all subgroups.
The Pan control operates in the same fashion, that is; extreme
left assigning signal exclusively to the odd mix bus and
extreme right the even mix bus.
Auxiliary Pre/ Post Switch
See Pre/Post Fader Switches
Auxiliary Send Controls
All Century Series consoles employ eight Aux Sends per input
channel which send signal to the Aux Bus. These sends are
controlled via the six level controls on each input module. Aux
Sends 1-4 (orange) are typically used for monitor sends. These
are the two switchable Auxes; see AUXILIARY 3•4 SWITCH
for more info on toggling between 1,2 and 3,4. Aux Sends 5-8
EQ In Switch
This input module switch, when depressed, inserts the EQ sec-
tion into the signal path and illuminates a green LED to the left
APPENDIX B
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SP / TC / GT
C
ENTURY SERIES
of the switch. With the switch in the up position, the input sig-
nal bypasses the EQ section and continues unmodified.
Gain Control
This knob adjusts input gain circuitry for proper electrical
operation. Adjust this control by monitoring signal present
(green) LED for bright intensity, with peak (red) LED flashing
only occasionally when the loudest program material is pre-
sent. When a PFL switch is depressed on an input channel, this
signal can be observed on the Left/Right monitor meters within
master module. When using this method for adjustment of the
Gain Control, normal signal level should be adjusted to show a
level between -9 VU and 0 VU. Constant distortion on an input
channel could mean that the input channel is being overdriven.
Check for improper input gain adjustment first.
EQ Sections
These controls are used to modify the tonal quality of an audio
signal. All Century Series consoles have a four-band EQ sec-
tion on each input module. The effect return sections, within
the group modules, have two-band EQ sections. Within an
input module, the EQ section will affect the signal only if the
EQ IN button is depressed.
EQ Control knobs - Fixed EQ:
When there is only one knob, it controls the boost or cut of a
fixed frequency range. The SP input modules and all effect
return sections have these single knob/fixed EQ controls.
Group Assignments
See BUS ASSIGNMENT SWITCHES
EQ Control knobs - Sweep EQ:
When there are two knobs, the inner knob controls the boost or
cut as in the fixed EQ, while the outer knob controls the center
frequency adjusted by the inner knob. These center frequencies
are printed on the module around the outer knob. The GT input
module has the frequency sweep knobs on all four bands,
while the TC input module has them only on the mid-frequen-
cies.
Group Meter
Located at the top of each subgroup module, this ten-segment
LED meter monitors the post-fader output of the group.
Similar meters on the Master Section monitor Left and Right
outputs.
Group XLR Switch
This switch assigns the post fader group signal to the group out
XLR located on the rear panel of the group module.
EQ Sweep Control
See EQ SECTIONS
Headphone J acks
Located at the top of the master section and under the right
side of the hand rest, these jacks provide a pre-fader stereo
headphone level output of the Left and Right outputs. When
anything on the console is PFL’d or AFL‘d, the R+L output is
replaced by whatever is PFL’d/AFL‘d.
External Talkback Input Switch
This switch disconnects the two regular talkback microphone
inputs and switches on the external talkback input XLR found
on the rear panel of the GT master section.
External Talkback Output Switch
This switch activates the external talkback output XLR. The
signal fed to the connector is the same signal being sent to the
talkback assignments.
Headphone Level Control
This control adjusts the level of the signal fed to the two head-
phone jacks; located in the upper right portion of the master
section, just below arm rest on the far right side.
Fader
HF Peak/ Shelve Switch
This switch is used for switching the high frequency EQ con-
trol between the normal shelving setting to a peak setting.
The fader is used for primary level control of the channel,
except those Aux output sections selected to a pre-fader posi-
tion. (The Insert output level is not affected by the fader posi-
tion.)
High Pass Switch
See 80Hz HIGH PASS SWITCH
Optimum noise performance is achieved when the fader is
operated near the 0 fader position and all gain controls are
properly set. This does not mean that all channels should be set
at 0 . Proper mixing requires varying of at least some of the
faders. The 0 point should be considered a reference, with all
volume changes taking place between the -10 and 0 reference
points at normal desired levels. For effect, faders may be oper-
ated below this level, provided no faders within the group or
master section are increased in level to compensate for the
input’s lower fader setting.
HMF EQ Control
See EQ SECTIONS
Insert J ack
This jack allows you to access a point in the channel’s electri-
cal circuit for inserting an external signal processor. The output
level of this connector is designed to drive the inputs of most
external signal processing equipment and to accept the result-
ing output signal. When a properly wired TRS plug is inserted
in this jack, the input signal path is broken after the gain stage
and high pass filter. The return signal is fed to a point just
before the EQ section. See the Connections and Conventions
section in the front of the manual for specific information on
plug polarity and signal assignments. (This jack could be used
to connect an effect with an unbalanced 1/4" connector; how-
ever, the signal path would be broken, leaving the remainder of
the input module unused, and the effected signal would need to
be returned to the console via an unused input channel. A
Fader Reverse Switch
This switch swaps roles between the Effect Return Level pot
and the Subgroup Fader. When depressed, this switch causes
the Effect Return Level to be controlled by the Subgroup fader,
and the Subgroup level to be controlled by the Effect Return
Level pot. If you want the control of the fader when setting
effect returns, this switch is particularly helpful. A red LED
indicator is provided to the left of the switch and illuminated
when the switch is depressed (reverse mode).
APPENDIX B
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SP / TC / GT
C
ENTURY SERIES
stereo (TRS) plug can be used with the Tip & Ring tied togeth- of input channel activity regardless of mute switch position.
er to access the channel signal pre-EQ).
The LED illuminates when the channel is muted, either from
the local mute switch or from any activated mute group.
Internal Oscillator
The GT master section has a 1 kHz internal oscillator. This
Switch
oscillator can be used as signal source to run tests, diagnostics See POLARITY REVERSE SWITCH
or calibrations. The oscillator can be assigned to all Groups,
PAD Switch
Auxes and Matrices via the Talkback assignment switches.
This -15dB pad attenuates the signal presented to the first stage
of the input module. It is important to note that the Pad Switch
This control adjusts the brightness of whatever lighting devices acts only upon the balanced XLR input signal; it has no effect
Lamp Dim Control
are plugged into the XLR sockets on the light bar.
upon the 1/4" input signal.The input GAIN control should be
positioned somewhere within its center 80% of travel. In the
event that the Gain control is set in its lower 10% of travel, and
the Peak LED is indicating more than an occasional short illu-
mination, the PAD Switch should be depressed and the Gain
re-adjusted as above. In the case where the GAIN control is set
to its upper range of travel (3 o’clock position or above) with
Left Meter
This ten segment LED meter normally displays the signal level
of the Left output. If any signal is in PFL mode, then this meter
displays that signal instead.
LF Peak/ Shelve Switch
This switch is used for switching the low frequency EQ control the PAD switch depressed, the Gain Control should initially be
between the normal shelving setting to a peak setting.
lowered and the PAD switch released. The gain should then be
increased and adjusted as above.
Line Input J ack
This is a balanced, high impedance input which is designed to
Pan Control
accept both balanced and unbalanced line level inputs. To When operating a stereo sound system or recording, this con-
select this input source, press the front panel LINE switch. See trol positions the image anywhere within the stereo spectrum
the Connections and Conventions section in the front of the when the Left/Right assignment switch is depressed. When
manual for specific information on plug polarity and signal signal is being sent to a subgroup, the pan control acts as part
assignments.
of the assignment system. Full counter clockwise assigns sig-
nal to the odd numbered mix bus and full clockwise assigns the
signal to the even numbered mix bus. Subgroups may also be
used as stereo pairs in which case this control functions the
same as when assigned to the Left/Right bus.
Line Switch
This switch, when depressed, selects the balanced Line Input
as opposed to the default balanced XLR Mic input.
Local Monitor Level Control
This control adjusts the level of the signal to the Local Monitor
Outputs on the back of the Master Section.
When the pan is in its center position, signal is fed equally to
the odd (left) and even (right) mix buses. When used in stereo
applications, the channel signal may be located anywhere with-
in the stereo image as controlled by the Pan control.
Matrix Level Control
These controls adjust the amount of group, L/R or Mono signal
fed to the respective matrix.
PEAK LED Indicator
Illuminates RED when any of the points monitored come with-
in 3db of its clipping point. Occasional quick blinking of this
LED is normal under proper operation; when this LED illumi-
nates noticeably, a correction should be made in the level con-
trol feeding that position to a point where this illumination is
reduced to the normal occasional flashing. It should be noted
that certain musical instruments produce very high levels of
peak response that are far above the average output levels of
these instruments. These include portions of any drum kit, but
most notably the bass drum and snare drum. It is considered
almost normal practice on these instruments to set the input
gain control to a point when the Red Peak LED is just firing
with nearly every hit of the drum.
Matrix Master Control
These controls adjust the final signal level for the associated
matrix output.
Matrix Pre/ Post Switch
This switch switches the group, L/R or Mono matrix send
between pre and post fader.
Mono Bus Assign Switch
Assigns the input signal directly to the Mono Clean bus. This
signal is unaffected by the position of the Pan Control, but is
controlled by the level position of the fader. Signal may be
assigned to this bus when you wish to assign this input signal
to the Mono output without going through the Stereo section of
the mixer. In addition to the many mono output uses, this out-
put can be used as an additional Effect Send.
This LED also serves as a PFL ON indicator, but at a much
lower intensity than when it is used to indicate a near overload
condition.
Mute Switch
PFL Switch
Turns off all send functions (except insert send) of the module
including those being used as monitors. (Monitor Mute may be
defeated internally - See your service facility for further infor-
mation.) This switch does not affect the PFL switch or the
Peak and Signal Present LED indicators, enabling monitoring
The PFL (Pre Fader Listen) switch enables the operator to lis-
ten to the channel signal before the fader or main channel level
control, allowing for monitoring within the master section of
the console. This signal IS NOT affected by the Channel Mute
Switch. When this switch is depressed, the signal level can be
APPENDIX B
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SP / TC / GT
C
ENTURY SERIES
seen on the Left/Right/Monitor meters, and can be heard both signal levels, with just an occasional short flash of the red peak
in the mixer’s headphone output and on the rear panel monitor LED indicator.
output of the console. When the PFL Switch is depressed, the
channel PEAK LED indicator illuminates at a low intensity.
When used as an indicator of switch position, the Peak LED
indicating circuit remains fully operational by illuminating at a
Sweep Control See EQ SECTIONS
Talkback Assignment Switches
These switches assign the talkback signal to the outputs and/or
auxes.
much higher intensity than its use as a status indicator.
Talkback Level Control
Phantom Power
This knob controls the final level of the talkback signal, and
dims local monitor output, if Dim switch has not been pressed.
See 48V PHANTOM POWER
Polarity Reverse Switch
This switch is used on input channels to adjust between dissim-
ilar microphone output polarity (see your microphone’s
Talkback Microphone Input
Found on the master section (GT) and under the arm rest on
the right side, these balanced XLR inputs allow for a micro-
instruction manual). It is also used to adjust phase cancellation
phone or other balanced mic-level source to be connected to
between microphones when more than one microphone is pick-
ing up the same acoustical signal (This should be kept to a
the talkback system.
minimum with proper microphone placement).
Talkback On Switch
This switch activates the entire talkback system including the
internal oscillator.
Pre/ Post Fader Switch
Switches the Aux signal sources between pre-fader and post-
fader positions. The pre-fader position is usually used for mon-
XLR Balanced Outputs
itor sends, so that any movement of fader level does not affect
these outputs. This is desirable for monitors, since their levels
normally need to be operated independently of the main (front-
of-house) system. When in the post-fader position, signal out-
put level from the Aux sends will proportionally follow the
main signal level. The result is maintenance of an effect in pro-
portion to the main signal level. When an input signal is faded
to 0dB, the post-fader Aux Send signals are also decreased to
0dB. In some cases, it may be desirable to derive effect sends
pre-fader for special effects, such as those generated by a vocal
doubler or harmonizer. The choice of switch position should be
determined by the actual situation; though as a general rule,
choose the pre-fader position for monitor sends and post-fader
position for effect sends.
This output is designed to drive both balanced and unbalanced
input devices without adaptation. Signals are normally bal-
anced on this output connector. The output is designed so that
if either pin 2 or pin 3 were intentionally shorted (as in con-
necting to an unbalanced input of your next stage of electron-
ics) or accidentally shorted, the output level of the non-shorted
connector pin increases by 6db. This is an amount equal to the
normal loss of a balanced output when one pin of a balanced
output is shorted. The result is no need for external gain make
up.
XLR Microphone Input Connector
Balanced XLR Input is designed to receive professional Low
Impedance microphone signals. The input Gain controls on the
front panel adjusts for most input levels. In the event of exces-
sive input levels, the front panel input pad switch should be
depressed. Front panel selection of 48 Volt Phantom power
enables most types of condenser microphones that require such
power to be used. (Note: most input devices can tolerate 48
Volt phantom power to be placed on their output terminals
(provided they are truly balanced) without causing damage to
the device. See your device’s operating manual for correct
operation. (If in doubt as to whether your non-condenser
microphone may be damaged by using Phantom Power, please
make sure that the front panel phantom power switch on that
input channel is in the off [out] position.)
Right Meter
This ten segment LED meter normally displays the signal level
of the Right output. If any signal is in PFL or AFL mode, then
this meter displays that signal instead.
Scene Mute Assignment Switch
Found on GT input and group modules, these switches assign
the input or EFX Return signal to one or more of the scene
mutes. These mutes are activated via the scene mute master
switches found on the master section.
Scene Mute Master Switches
Found on the GT Master Section, these switches activate the
four scene mutes.
This input may also be used for low level line input signals,
provided the source (instrument) is able to drive a 5k Ohm or
higher load. (See your instruments or electronics owner’s man-
ual for output impedance.) When line output devices such as
tape players are plugged into the microphone input, special
care should be observed that the phantom power is turned off
on that channel, as damage may result. Because of this, it is
recommended that the 1/4" line input connector be used when
connecting a line level device. 48 Volt Phantom power is not
present on these input connectors, and the impedance of the
line input connector is high enough to accept any line level
device.
Scene Mute Safe Switch w/ LED
This switch, found beneath the Scene Mute Assignment
Switches, disables any selected scene mutes. A green LED
indicates that the Safe switch has been engaged.
Signal Present LED
This LED displays, in real time, the level activity of the chan-
nel by varying the intensity. Any illumination of this LED
indicates that a signal is present and is somewhere within the
usable operating level. Optimum operation is when this LED is
at a bright but varying intensity and following the channel’s
APPENDIX B
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SP / TC / GT
C
ENTURY SERIES
APPENDIX B
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SP / TC / GT
C
ENTURY SERIES
SP
GT TC
Ap p e nd ix C - Sc he m a tic s
LOCATION
DESCRIPTION
SCHEMATIC #
1
DWG # REV #
N/A
STANDARD INPUT MODULE
INPUT CONNECTOR PCB
04
04
02
02
02
GT INPUT MAIN PCB
TC INPUT MAIN PCB
SP INPUT MAIN PCB
STEREO INPUT MODULE
2
3
4
5
76D1530
N/A
N/A
STEREO INPUT CONNECTOR
76D1920
STEREO INPUT
MAIN PCB (1 OF 2)
6
76D1919
01
STEREO INPUT
MAIN PCB (2 OF 2)
7
8
9
76D1919
N/A
01
01
03
GROUP MODULE
GROUP MAIN PCB
GROUP CONNECTOR PCB
N/A
LEFT / RIGHT
OUTPUT MODULE
LEFT / RIGHT CONNECTOR PCB
MONO CONNECTOR PCB
10
11
N/A
N/A
01
04
L/R MAIN PCB
MONO OUTPUT
MODULE
12
13
N/A
N/A
04
03
MONO MAIN PCB
MASTER CONTROL
MODULE
MASTER CONNECTOR PCB
MATRIX CONNECTOR PCB
14
15
16
17
N/A
04
04
02
01
MASTER MAIN PCB
MATRIX MODULE
MATRIX MAIN PCB
N/A
76D1922
76D1921
RIBBON CABLE
PIN OUT DIAGRAMS
RIBBON PIN OUTS
18
APPENDIX C
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Crest Audio Inc.
100 Eisenhower Dr., Paramus NJ 07652 USA
TEL: 201.909.8700 FAX: 201.909.8744
Printed in USA
SP/TC/GT Owners Manual
Copyright © 1997 Crest Audio Inc.
v. 2.2 11/3/97 - D7000001
*D7000001*
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